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need help! why my solar panel will not charge my laptop batt
i had came across many solar charger products whereby they use a battery pack to store the solar energy and charge it to their laptops.i had in mind thay i want to use the solar energy going to through regulator to charge my laptop battery.i am using...
Hobby Circuits and Small Projects Problems :: 23 Nov 2009 0:15 :: funnynypd :: Replies: 18 :: Views: 813
help!cooperative communication!
hi,all. i have some questions about the cooperative communication, since there is some formulas puzzle. if you do some research about cooperative communication, could you give me your email adress. i will send the question to you.thanks...
Digital communication :: 22 Nov 2009 5:29 :: channel_coding84 :: Replies: 5 :: Views: 433
pll simulation tools ???
dear all,if i want to see the performance of the pll, such as, settling time, phase margin, pole, zero,etc. which software is suitable for the pll simulation? thanks a lot!...
RF, Microwave, Antennas and Optics :: 22 Nov 2009 5:20 :: BigBoss :: Replies: 9 :: Views: 240
matlab: using matlab to model a wireless network
hello ecereyone, i am new to matlab and i need to model a wireless network using matlab and the main funtion of this task are:1. set up 20 wireless node (computers)2. assign capabilities to each of the node ( capabilities here mean assigning two fea...
Digital communication :: 21 Nov 2009 10:08 :: ckabiri :: Replies: 4 :: Views: 966
mimo/space-time processing
can anyone suggest any good books on mimo or space-time processing? thanks!...
RF, Microwave, Antennas and Optics :: 21 Nov 2009 9:48 :: ckabiri :: Replies: 7 :: Views: 1266
difference between wireless and computer networks
please i want to know the difference between a msc in wireless communication systems and a wireless computer networking .will i learn about computer network in wireless communication systems .please i need help on this i need to choose a masters thou...
Network :: 20 Nov 2009 8:24 :: ironheart :: Replies: 2 :: Views: 126
lna design material
hi all, can anyone tell me where or which book is good for lna circuit designing.please mail me or reply to this message.sincerely require this very urgently.sandeep.suhas@gmail.comwith regards,sandeep....
RF, Microwave, Antennas and Optics :: 20 Nov 2009 6:03 :: benooi :: Replies: 2 :: Views: 111
wt is dielectric antennaa..??
please help me to know something about delectric antennaaa.... ny information regarding this antenna is fine 4 me...kishore.........
RF, Microwave, Antennas and Optics :: 19 Nov 2009 20:26 :: pappumaity :: Replies: 10 :: Views: 534
ns2 extension with directional antennas
i have a small problem in my simulation, i appreciate if you could help me in debugging this. i am working on topology control and power saving in ad-hoc networks using directional antennas. recently we found a patch for ns2.30 along with a directio...
Network :: 19 Nov 2009 17:45 :: DianaLinda :: Replies: 6 :: Views: 1704
data transfer between gprs modem and remote server
hi, i am new to gprs communication, but i hav worked in appcation using gsm. now i want develop application to transfer data between gprs modem and a server kept in remote place. can anyone help me how to initialize the modem with gprs mode for f...
Digital communication :: 19 Nov 2009 17:02 :: GSM Man :: Replies: 10 :: Views: 3293
second harmonic in gsm(900)
in gsm 900, the gsm modem i am using has a radiated second harmonic more than -30 dbm (violates etsi). testing the modem revealed that the conducted second harmonic at 1800 was -42 dbm. my antenna gain at 1800 is 3 dbm. i am not sure where the 9 db g...
RF, Microwave, Antennas and Optics :: 19 Nov 2009 15:52 :: Wilson_yu_chen :: Replies: 8 :: Views: 810
wimax: rssi and cinr relation to modulation
hi all,actually i want to ask about which parameter better to use changing modulation of wimax on radio link, rssi or cinr?, as i know rssi and cinr maybe can change in different way, if rssi degradate much, maybe cinr not (vice-versa).we can calcula...
RF, Microwave, Antennas and Optics :: 19 Nov 2009 15:31 :: adesiregar_ps :: Replies: 4 :: Views: 114
deleted from topic number 371320 mod pranam77
hi everyone!i am interested in the field of wireless communication. i wanted a text book/books that initiate me to the field and provide practice as well. please suggest a few.thanks...
Trashcan :: 19 Nov 2009 14:39 :: kamehameha :: Replies: 0 :: Views: 15
wimax antenna requirement
hi all,i plan to do master degree in antenna for wimax application. i need your guidance on the list below:-1) should i go for mobile or fixed antenna for wimax?2) what kind of specification and limitation for either both above, for example frequency...
RF, Microwave, Antennas and Optics :: 19 Nov 2009 3:30 :: adesiregar_ps :: Replies: 1 :: Views: 267
mpeg4 simulation in wireless channel
hey guys, i have questions about video processing, but i have no background on that.1. if i have raw mpeg4 data, how can i get information from the file in bit in order to simulate in wireless channel. 2. how can i know when it is in fram i, p,b ?ma...
Digital Signal Processing :: 19 Nov 2009 2:39 :: tanuki3480 :: Replies: 0 :: Views: 45
100% repair of laptop & desktop motherboard
hi! i am sandip golani engaged in chip-level repairing of laptop & desktop motherboard, if any one of u have any problem, pls. place u r question in the forum, i will reply over here. i am ready to share my 15 years experiance with edaboard.com. m...
Service Manuals, Requests, Repair Tips :: 19 Nov 2009 1:09 :: Sinisa :: Replies: 144 :: Views: 30019
deleted from topic number 371158 mod pranam77
i tried to make a remote hard disk without success : i take that{http://cgi.ebay.com/12v-wireless-remote-control-0v-output-switch-rp100_w0qqitemz400081675494qqihz027qqcategoryz50586qqcmdzviewitemqq_trksidzp4340.m444qq_trkparmszalgo%3dcrx%26its%3dc%25...
Trashcan :: 18 Nov 2009 7:16 :: johnymal :: Replies: 0 :: Views: 15
password+problem solutions+a.antoniou dsp book
hi everyone,i am urgently looking for the problems solutions from the a.antonious digital signal processing: signals, systems and filters. solutions are available at his webpage http://www.d-filter.ece.uvic.ca/supportmaterials.html , but they are sec...
Digital Signal Processing :: 18 Nov 2009 5:51 :: always.asif :: Replies: 14 :: Views: 639
psoc in wireless sensor node
hi all, i am a new designer in psoc.i want to design a wireless node that contains analog input signal connected to psoc microcontroller which should connected by serial max 232 with a wi-fi modulator.can anyone help me ?...
PLD, SPLD, GAL, CPLD, FPGA Design :: 17 Nov 2009 19:57 :: jczarne :: Replies: 7 :: Views: 618
matlab codes for cdma rake receiver?
i am in final year electronics and telecommunication engineering and would like to have the matlab codes for cdma rake receiver at the earliest as it is my final year engineering project.regards,neeraj...
Digital communication :: 17 Nov 2009 12:51 :: rajez79 :: Replies: 46 :: Views: 10385
analog circuit design tool
hi marie,it is tough to get in any of these software until u have access through educational institutes or huge co-orporations.if you are seeking to learn this on your own, well u can get there manuals but not the softwarethats true marie, and some t...
Software Downloads/Uploads :: 17 Nov 2009 9:15 :: koosdoos :: Replies: 33 :: Views: 14315
cdma
i m doing a project on cdma. can somebody send me some details about cdma....
Digital communication :: 17 Nov 2009 4:50 :: Mynul :: Replies: 23 :: Views: 2925
sim300 breakout pcb design - let's fab some pcbs :)
hello,some time ago someone mentioned that they have designed a breakout pcb for that pesky gsm module - but the thread went dead and i didnt hear back from that person.if anyone had done a pcb design for breakout board for sim300 module, please let ...
Professional Hardware and Electronics Design :: 17 Nov 2009 3:20 :: naeemafar :: Replies: 45 :: Views: 11164
hi, everybody,which country do you come from?
i just want to do a pollhi, everybody,which country do you come from?we can communicate international. i come from beijing china....
General :: 16 Nov 2009 23:05 :: chelovek :: Replies: 1511 :: Views: 60816
mobile communication project on matlab
hi every1 ive just finished cdma project on fpga boards the design is from a-to-z digital even the summation process if any1 interested i can give a hand...,...
Digital communication :: 16 Nov 2009 17:53 :: rahul bakshi :: Replies: 68 :: Views: 8872
propagation prediction models for wireless communication sys
hi, can any1 advice me on whats the latest method on topic propagation prediction models for wireless communication systems ?? thanks in advance ~...
Digital communication :: 16 Nov 2009 12:32 :: Communications_Engineer :: Replies: 2 :: Views: 160
introduction to wimax
can any body plz tell me about wimax. why there is boom if wimax instead of cdma.i searched through many sites but still not clearedcan any body guide me in simple way.virus king...
Digital communication :: 16 Nov 2009 12:31 :: Communications_Engineer :: Replies: 8 :: Views: 627
remote hard disk
i tried to make a remote hard disk without success : i take that{http://cgi.ebay.com/12v-wireless-remote-control-0v-output-switch-rp100_w0qqitemz400081675494qqihz027qqcategoryz50586qqcmdzviewitemqq_trksidzp4340.m444qq_trkparmszalgo%3dcrx%26its%3dc%25...
Hobby Circuits and Small Projects Problems :: 15 Nov 2009 23:46 :: johnymal :: Replies: 0 :: Views: 63
power line communication
i wonder if anyone has been working on this technology. i would like to hear from you. i have specific requests to make. thanks...
Professional Hardware and Electronics Design :: 14 Nov 2009 18:42 :: myselfsalma :: Replies: 16 :: Views: 1990
what is mimo-ofdm standing for?
what is mimo-ofdm...
Digital communication :: 14 Nov 2009 11:07 :: mro83 :: Replies: 3 :: Views: 114
deleted from topic number 370742 mod klug
please i want to know the difference between a msc in wireless communication systems and a wireless computer networking .will i learn about computer network in wireless communication systems .please i need help on this i need to choose a masters thou...
Trashcan :: 13 Nov 2009 18:14 :: persistence911 :: Replies: 0 :: Views: 42
deleted from topic number 370741 mod klug
please i want to know the difference between a msc in wireless communication systems and a wireless computer networking .will i learn about computer network in wireless communication systems .please i need help on this i need to choose a masters thou...
Trashcan :: 13 Nov 2009 17:49 :: persistence911 :: Replies: 0 :: Views: 21
can the fpga transmist the wireless data ?
hello everyone !! i dont know , can the fpga transmist the wireless data ? :?::?::?::?:...
PLD, SPLD, GAL, CPLD, FPGA Design :: 13 Nov 2009 13:52 :: kvingle :: Replies: 2 :: Views: 78
why do we use the 60 ghz band?
hi all,id like your good answers about this topic.in fact, im not asking only about the 60 ghz band, but generally the tens of gigahertz bands.1. i know that cellular service providers use microwave links @ ~30 ghz to transmit data with high capacity...
RF, Microwave, Antennas and Optics :: 13 Nov 2009 13:15 :: Abhishekabs :: Replies: 7 :: Views: 354
interfacing bluetooth usb dongle with microcontroller board
hi friends, i am having a microcontroller board. the microcontroller and the board belongs to st microelectronics. this is a completely finished board. the code inside the microcontroller cannot be changed but the hardware changes can be done to the ...
Microcontrollers :: 13 Nov 2009 12:11 :: pavankumarssv :: Replies: 5 :: Views: 225
ADS
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help me with a project
i want to make a circuit to can read micosd memoricard usig bluetooth or wireless. in finaly, i want to can read via bluetooth or wireless , from a computer a memory card microsd!!! thats mean i want to make a bluetooth microsd card reader circuit!!!...
Microcontrollers :: 13 Nov 2009 7:03 :: stan4 :: Replies: 1 :: Views: 138
µ selection in water-filling capacity algorithm
hi guys, i am currently doing a capacity analysis for mimo-sm in a rayleigh channel. i stuck with one problem: how do we determine the value of µ (water filling level) in water-filling algorithm? many thanks for your kind knowledge sharingcheers...
Digital communication :: 12 Nov 2009 14:16 :: acekris :: Replies: 3 :: Views: 255
matlab programing + gaussian finction
hi guys this is my first time in here but i think this is an wonderful site so i have decided to share with you my experiance in matlab, i will be posting certian programs in matlab and u can ask me anything you want to know. i will later tell you wh...
Digital communication :: 12 Nov 2009 7:20 :: Communications_Engineer :: Replies: 95 :: Views: 13948
india&pakistan gsm/gprs module
dear friends, so far as you know, is there any well known gsm/gprs module distributor in india or pakistan?...
Microcontrollers :: 12 Nov 2009 7:01 :: moyoumin :: Replies: 4 :: Views: 150
matlab simulation for mimo-ofdm and wimax
hello...i am doing some research in ofdm and other wireless technologiesdoes anyone have any simulation in matlab for mimo-ofdm and some good paper/matlab code on wimaxthanx in advance...topic moved here by fragrance...
Digital communication :: 12 Nov 2009 6:42 :: shree4u :: Replies: 40 :: Views: 20633
wireless transmission and reception using psoc
himy project requires sensing some analog data using psoc and transmitting it by wireless to be received by either another psoc connected to labview or by labview directly. kindly guide me in this regard. also, let me know the range i can get for the...
PLD, SPLD, GAL, CPLD, FPGA Design :: 11 Nov 2009 19:24 :: anithatg :: Replies: 2 :: Views: 198
is it possible to simulate mac layer of wimax in matlab?
hi,i am relatively new to matlab and i was woundering if it is possible to simulate the mac layer with qos of wimax 802.16d or e? any comments on this metter will be appreciated.thank you!regards!...
Digital communication :: 11 Nov 2009 17:43 :: vini_rathi :: Replies: 16 :: Views: 2011
reading active energy with ade7754
hello im using an ade7754 to read the active energy from a triphase network with a pic16f877. i could acquire vrms, irms and the active power from each phase separately, but i couldn’t read the total active energy because i don’t have ...
Microcontrollers :: 11 Nov 2009 2:17 :: issaiass :: Replies: 3 :: Views: 310
stereoscopic video processing, lvds to cvbs: advice needed
i am looking at an imager that has a stereo-mode output when coupled with an lvds chip of 8-bit raw bayer on an 18-bit frame output. i want to convert this to cvbs output and have been told that i should use cpld of some kind, or perhaps fpga. ther...
PLD, SPLD, GAL, CPLD, FPGA Design :: 10 Nov 2009 15:25 :: stereofan :: Replies: 0 :: Views: 39
gsm module-ishan nanda
i am getting a sim300 module at 27$.also another module called benq for around 30$.can anyone suggest a lower price dealer for the same.ishan nanda...
Professional Hardware and Electronics Design :: 10 Nov 2009 5:48 :: js.bhatia28 :: Replies: 5 :: Views: 722
battery isolation from power supply
hey im working on a wireless battery charger design. so far, i have inductive coupling to power up a pll based battery charging circuit.each circuit works fine in isolation. but when together and when the whole circuit is off, the battery back powers...
Power Electronics :: 09 Nov 2009 17:48 :: temporysing :: Replies: 0 :: Views: 114
2.4ghz or 5.2ghz ifa (inverted "f" antenna),who ha
i am doing some simulations with ansoft hfss on ifa.the 2.4ghz dimension fits good both on simulation and measurment with the reference dimension.i want to simulate the 5.2ghz ifa, but i have no reference to compare.does anyone have the design dimesi...
RF, Microwave, Antennas and Optics :: 09 Nov 2009 13:25 :: ahsaan :: Replies: 83 :: Views: 12152
three phase wireless smart energy meter using ade7754 chip
hello dears!i have designed three phase wireless energy meter using ade7754 chip. i have calculated all the parameters voltages, currents, active power, apparent power, active energy, apparent energy, frequencies, power factor etc.but ade7754 has li...
Embedded Systems and Real-Time OS :: 09 Nov 2009 0:16 :: alberto1683 :: Replies: 3 :: Views: 216
send gps data through gprs
hi alldear i send gps data through gprsi have server ip & port server please send at command for send gps data to ipif gprs is not available then send the information with smsi am using sim300dplease help :cry::cry:this is my project for practical...
Professional Hardware and Electronics Design :: 08 Nov 2009 4:44 :: xmfa32 :: Replies: 10 :: Views: 1969
capacitor voltage storage
hello dears!i have designed a three phase wireless smart energy meter using atmega32 mcu. for energizing the circuit i have used dc power supply but not any battery backup in case of power failure.when power failure occurs or load shading occurs my c...
Electromagnetic Design and Simulation :: 07 Nov 2009 13:25 :: svhb :: Replies: 9 :: Views: 171
reed solomon code for encoder and decoder
hi all .can any one upload reed solomon code(matlab code with explantion) for encoder and decoder.thanks in advancechin...
Digital communication :: 07 Nov 2009 7:05 :: wildlifexs :: Replies: 62 :: Views: 15054
patch antenna example
hello,i want to test a simulation program. therefore i’m searching for a simple patch antenna example. i need a design and the data of the antenna e.g. resonant frequency, the return loss and the gain.does anybody know where i can find a patch ...
Electromagnetic Design and Simulation :: 06 Nov 2009 22:11 :: pakitos :: Replies: 1 :: Views: 123
i need to know importance of microwaves
pls guys i want to know to importance of microwave in the transmission and reception of signal in telecommunication sites?...
RF, Microwave, Antennas and Optics :: 05 Nov 2009 18:38 :: b4bb4ge :: Replies: 4 :: Views: 141
ecg monitoring system based on wireless sensor networks.
sir i m doing my mtech final yr project on the topic of ecg monitoring system based on wireless sensor networks.i va attached my block diagram here... kindly give an idea about simulation of this projects. in which simulator i can do my simulator ....
Hobby Circuits and Small Projects Problems :: 05 Nov 2009 11:48 :: mohanag :: Replies: 1 :: Views: 129
interfacing bluetooth usb dongle with microcontroller
do anyone know how to interface bluetooth usb dongle(which is easily available for pc) with microcontrollers?coz these dongles r easily available n cheaper than bluetooth module so if its possible to interface with ucs than it becomes cheaper bluetoo...
Microcontrollers :: 05 Nov 2009 7:25 :: dannym :: Replies: 115 :: Views: 25014
starting work with zigbee
hi. i am planning to start some work with zigbee protocol.this is going to be a beginners work,beacause no kind of exploration of zigbee has been yet made in the research insitute where i am working,probably not even in our country.our initital goa...
RF, Microwave, Antennas and Optics :: 05 Nov 2009 7:11 :: azfar-adib :: Replies: 0 :: Views: 66
how to convert 100hz signal to intermediate frequency
hi there,i am designing a device which is planning to transmit a ecg signal from a portable device to remote base station. now ecg front end circuit has been down and i can obtain the normal ecg signal under 150hz. now i am not very sure how to conve...
RF, Microwave, Antennas and Optics :: 04 Nov 2009 19:40 :: biff44 :: Replies: 8 :: Views: 246
wireless router range increase??
hello all!! i want to increase my d-link wireless router range, how can i do that??...
Electronic Elementary Questions :: 04 Nov 2009 13:58 :: xuan1982 :: Replies: 2 :: Views: 114
transmitting 12v signal wireless
ing to send a 12v on/off signal remotely within 100 feet. can someone help me design a way to transmit and receive or point me to a product that does this. i am taking a 12v signal and transmitting wireless to turn a light on and off remotely.any h...
Electronic Elementary Questions :: 04 Nov 2009 8:10 :: pranam77 :: Replies: 2 :: Views: 132
who can help me? how can i learn cooperative communication
dears, now i am learning network coding in marc(multiple access relay channel), do you familiar with this field? could you give me some matlab code to study, some codes about af, df, and network coding . thank you --- bless you allmy email is su...
Digital communication :: 03 Nov 2009 16:35 :: preetica :: Replies: 24 :: Views: 1394
design of a 10kw inverter for a fuel cell
back by popular demand.. a how to compelte with schematic the results of usa 2001 (?) energy challenge. a couple of the files included in the attached are free from the web page, but the rest are rare finds. 10kw fuel cell inverter, single phase i...
Hobby Circuits and Small Projects Problems :: 03 Nov 2009 9:50 :: atpsizan :: Replies: 48 :: Views: 12244
matlab to automatically create a wireless network.
hii am trying to develop a program using matlab that automatically designs a wireless network.i need to program matlab to insert base stations in an area and allow me to move it around .any idea how to insert the base station and move it.?thanks...
Network :: 03 Nov 2009 0:57 :: Masterpiece :: Replies: 5 :: Views: 459
hot topics in wireless networks
hiwould you please introduce the hot topics in wireless networks?regards...
Digital communication :: 02 Nov 2009 6:47 :: Communications_Engineer :: Replies: 1 :: Views: 108
need a brief project idea for my msc.
hii am a final year msc. in networking student from canada. i want to finish my masters for this reason, i have to go through a capstone project. i am looking for idea for this capstone project which will help me fetch me a job in the field of networ...
Network :: 01 Nov 2009 20:39 :: Masterpiece :: Replies: 4 :: Views: 360
circuit of rf transmtter to pass voice, text, video etc data
hi every body i really need help in my graduation project i want a powerful applications using rf signals in brief i need to transmit data (voice , text , video , image ) .. wireless by means i need to construct a circuit like a bluetooth circuit but...
Electromagnetic Design and Simulation :: 31 Oct 2009 23:35 :: micheallogic :: Replies: 0 :: Views: 60
usb pic and wireless application
hi. i am planing to implement a wireless webcam for my project.for example pic18f works as a device in usb operation mode. but it is not my device, my device is webcam, so i want to by-pass all protocols or other issues that this pic handles when it ...
Microcontrollers :: 31 Oct 2009 16:04 :: equ :: Replies: 2 :: Views: 171
hfss tutorial for transmission line vias
hi, i have been contacted by many people from edaboard forum about hfss tutorial. so, i have uploded a tutorial with its hfss projects.i hope this work will be helpfull....
Electromagnetic Design and Simulation :: 31 Oct 2009 9:25 :: breadpig :: Replies: 211 :: Views: 57469
inductive resonance wireless power
hi everyone, i hav a project which involve using inductive resonance to produce wireless energy and then create a cell phone charger using that.the problem now i faced is i have difficulties getting the power transfer efficiently.wat i have done is, ...
Electromagnetic Design and Simulation :: 30 Oct 2009 15:35 :: breadpig :: Replies: 2 :: Views: 201
about usb 3.0 or wireless usb
hi all, who are working in usb3.0 or wireless usb? could you provide some material about it?...
ASIC Design Methodologies & Tools (Digital) :: 30 Oct 2009 5:31 :: niravbhatt :: Replies: 4 :: Views: 147
diy moving message display
hi alli want to have moving message display program for atmel at89c251. may some one help me?...
Microcontrollers :: 29 Oct 2009 11:11 :: madicalphy :: Replies: 565 :: Views: 215053
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