65 Threads found on edaboard.com: Hamming Code
//Encoder section of hamming 3
`timescale 100 ps/ 100ps
parameter N = 4;
parameter M = 3;
PLD, SPLD, GAL, CPLD, FPGA Design :: 11-23-2016 05:53 :: sooraj sreedhar :: Replies: 1 :: Views: 259
I need a verilog code for FSM with hamming 3 algorithm for error detection and correction.. please help me:roll:
Digital Signal Processing :: 10-20-2016 07:21 :: sooraj sreedhar :: Replies: 3 :: Views: 392
I search H-matrix for expurgated expurgated hamming code (63,56). This code is used for CCSDS tc decoding.
The generator polynomial
g(x) =x7 +x6 + x2 + 1
ASIC Design Methodologies and Tools (Digital) :: 07-25-2016 06:05 :: poluekt :: Replies: 1 :: Views: 513
hi , i am using verilog code to fix the 12 bit input data .
in my module number will be counted before this module and is an input .
i want to change the bit number of main_data ( main_data) , because this bit is wrong so it should be toggled ,
but when its okeii , with every clk this bit changes and i dont want this to happen . i wa
PLD, SPLD, GAL, CPLD, FPGA Design :: 08-18-2015 15:28 :: moein0114 :: Replies: 1 :: Views: 448
i need the coding for above title
PLD, SPLD, GAL, CPLD, FPGA Design :: 08-04-2015 06:51 :: rajeshnfnds :: Replies: 0 :: Views: 342
I have to implement hamming code ECC to Single Port RAM and True Dual Port RAM. At the moment 32/64/128 bit HC ECC has been implemented but takes more resources. I know that there is Built-In ECC and Soft ECC for Simple Dual Port RAM and I do not see for Single Port RAM and True Dual Port RAM in the CoreGen.
My question is: Is ther
PLD, SPLD, GAL, CPLD, FPGA Design :: 07-22-2015 07:35 :: kaiserschmarren87 :: Replies: 0 :: Views: 441
Have you read the following on hamming (7,4) code?
Here is an example for a larger one too.
ASIC Design Methodologies and Tools (Digital) :: 04-14-2015 00:43 :: ads-ee :: Replies: 3 :: Views: 636
In my OFDM system, I need to apply a hamming and Blackman window in frequency domain. My simulation is on Matlab.
I've done a FFT of this window and did its convolution with my data in freq domain, but I'm not getting the desired results. :-(
Can anyone help me to do this the correct way ?
Digital communication :: 03-08-2015 08:18 :: cenation :: Replies: 1 :: Views: 618
i need the matlab code of simple rayleigh fading channels for error correcting code (hamming code).
i need to pass the input codeword and obtain the output.
pls help me.
Digital communication :: 02-28-2015 17:52 :: min.bd11 :: Replies: 0 :: Views: 634
You need 6 extra bits.
The hamming codes are perfect, but they don't exist for any number of data bits.
Two of them are hamming(31, 26) and hamming(63, 57).
The first number is the total number of bits, and the second is the number of data bits.
You can take hamming(63, 57) and use only 32 of the 57 (...)
PLD, SPLD, GAL, CPLD, FPGA Design :: 12-25-2014 19:14 :: std_match :: Replies: 4 :: Views: 1682
How to measure bit error rate in Matlab using hamming code?
Digital communication :: 03-17-2014 01:25 :: jayadofe :: Replies: 0 :: Views: 732
hamming codes are single-error correcting codes, so the minimum distance is 3.
Adding another parity bit, it is possible to increase the minimum distance to 4 and detect double bit errors.
Look for "extended hamming code".
Digital communication :: 02-27-2014 17:27 :: zorro :: Replies: 4 :: Views: 833
Hello, my final year project is FPGA Implementation of hamming far as I know, I need to write seperate programs for hamming code, ROM, RAM, Clock Divider, Encoder, Decoder, Syndrome, Transmitter , Receiver and Main.The FPGA I'm using is Actel ProASIC 3 A3P250.The problem, I couldn't get the block diagram (...)
PLD, SPLD, GAL, CPLD, FPGA Design :: 01-31-2014 10:42 :: edison.pioneer :: Replies: 0 :: Views: 691
please give me a solution.
ASIC Design Methodologies and Tools (Digital) :: 01-21-2014 07:25 :: mohitj252 :: Replies: 0 :: Views: 630
You'd think that by now you've had enough days to learn how to use google to find a generic solution for the various distances. Instead of hoping permute will post another bit of code.
What resources did you find yet while googling, and if not why not? Just as a quick test I googled "hamming distance vhdl" and found enough workable material, so go
PLD, SPLD, GAL, CPLD, FPGA Design :: 09-11-2013 07:39 :: mrflibble :: Replies: 2 :: Views: 639
Fresh out of hamming distance code. In fact, I am fresh out of ham. Guess it's time for groceries.
So I will do my own groceries, while you do your own homework. Okay then, sounds like a plan.
PLD, SPLD, GAL, CPLD, FPGA Design :: 09-05-2013 10:50 :: mrflibble :: Replies: 3 :: Views: 1976
...If a convolutional code is said to correct 2 errors what does it mean exactly ?...
The amount of detectable bit errors is related to minimum distance d parameter.
For instance, d=2 means that 2 bits can be
Digital communication :: 07-13-2013 22:22 :: andre_teprom :: Replies: 5 :: Views: 746
Hi, Please i need help with this Matlab code.
i am using this melcept function for different samples of me saying the word "one"
here is my code
=wavread('one.wav'); %Read In Sample
i get an output for the different samples of me saying one as 54
Digital Signal Processing :: 06-09-2013 08:41 :: oiyela :: Replies: 0 :: Views: 1220
In order to do error correction of even a single bit you require minimum distance of code to be at least 3. By hamming bound you can easily find that for un-coded data length of 8 bits, minimum redundancy required is that of 4 bits. So, you cannot correct errors with only three bits of redundancy. If you add one more bit to the (...)
Digital communication :: 06-06-2013 10:22 :: MHanif :: Replies: 1 :: Views: 484
Linear block codes can be represented as
where G is the generator matrix. Another way to characterize codes is by the 'parity check matrix' which is the matrix of basis of codes orthogonal to the codes c=mG i.e.
Just multiply the receive code word by H^T. If
Digital communication :: 05-25-2013 20:37 :: MHanif :: Replies: 1 :: Views: 640
Hi, may i know is it possible for us to detect the position of multiple errors in the hamming code(15,11) using the method of parity bits.
The original transmitted hamming code is 100111010101111 but the received code is 111111011101111. SHOW how the parity bits indicate the position of the errors (...)
Digital communication :: 05-17-2013 19:01 :: nego :: Replies: 3 :: Views: 1689
hi everyone , i have this jtft codes for motion compensation in isar . there is only gabor transform codes , here is my project that use the other jtft methods ( cwt ,awt,vwd ) to this data . can someone help to derive these codes ?
this is the code i have ,
Ese = S_Duz;
win = hamming(pulses)* (...)
Digital Signal Processing :: 05-08-2013 23:29 :: netburak :: Replies: 0 :: Views: 461
I thought that I completely understand the idea of convolutional coding and viterbi decoding.However,now,there is one funny question in my mind that I have never thought about.
I am not sure how we compare received data code words with outputs on trellis diagram and find hamming distances,branch metrics and so on.I mean should I imagine like "tr
Digital communication :: 02-06-2013 20:54 :: darthvader1 :: Replies: 1 :: Views: 521
Does anyone has 512 bytes data n calculated ECC using hamming algorithm..?
ASIC Design Methodologies and Tools (Digital) :: 12-03-2012 10:54 :: shan21 :: Replies: 0 :: Views: 612
You must to apply some checking code, as hamming, CRC, etc...
Here there are some examples with CRC coding :
Digital communication :: 06-30-2012 00:55 :: andre_teprom :: Replies: 5 :: Views: 1748
in the below code of hamming code how does that if statements work?? der wat does ^ it xor??? plz help me out
always @(inp or reset)
outp = 0;
PLD, SPLD, GAL, CPLD, FPGA Design :: 05-20-2012 03:13 :: Diapanagar :: Replies: 0 :: Views: 615
hello me doing hamming code design in verilog with fpga design,please send the source code and detail of this project :razz: as soon as possible please
PLD, SPLD, GAL, CPLD, FPGA Design :: 03-08-2012 13:57 :: kajagar :: Replies: 3 :: Views: 1213
I done in MATLAB a routine to determine to the hamming(7,4,1) code, the amount of syndromes equal to Zero.
You could perform some few changes to fit to your code.
% Program to generate all the input error patterns from 0000000 to 1111111
% and then calculate corresponding syndromes
d = ;
h =[ ; [ 0
Elementary Electronic Questions :: 02-05-2012 01:38 :: andre_teprom :: Replies: 5 :: Views: 795
VLSI Memory Chip Design (Springer Series in Advanced Microelectronics) (v. 5)
Kiyoo Itoh (Author)
Hemming code is important part of memory design
hamming code - Wikipedia, the free encyclopedia
Elementary Electronic Questions :: 10-14-2011 02:01 :: yura717 :: Replies: 2 :: Views: 621
Its a good start but there is a lot to improve on this. Please check the following. Its the best that i have seen so far.
It generates verilog code for Galois Field Multiplier, hamming codes etc etc
ASIC Design Methodologies and Tools (Digital) :: 09-17-2011 18:46 :: tariq786 :: Replies: 2 :: Views: 1326
always @(in or reset)
out = 0;
PLD, SPLD, GAL, CPLD, FPGA Design :: 04-21-2011 13:44 :: pooja_khubbar :: Replies: 1 :: Views: 1661
hi i want to do hamming distance reordering of test data any 1 tell me how to work on code in verilog
ASIC Design Methodologies and Tools (Digital) :: 04-21-2011 03:45 :: adi.freaks.86 :: Replies: 0 :: Views: 656
I need to compare the(7,4) hamming coded bit error probability with the uncoded bit error probabity and a Q function.
The Matlab code which i have compare the theoretial uncoded ber with hamming (7,4) code
Digital communication :: 04-13-2011 21:57 :: Priya1987 :: Replies: 0 :: Views: 4576
I am learning the hamming code recently, about the (7,4) type hamming code;
I try to understand the following :
M=(0 1 1 0); M is one of 16 possible messages;
G is the generate matrix;
X= M * G =
1 0 0 0 0 1 1 1
0 1 0 0 1 0 1 1
0 0 1 0 1 1 0 1
0 0 0 1 1 1 1 1
What's the (...)
Digital communication :: 04-04-2011 10:54 :: sunjianhuigou :: Replies: 0 :: Views: 645
hello,r u having source code and details of this hamming code design in verilog fpga,if, please send to my email
PLD, SPLD, GAL, CPLD, FPGA Design :: 03-08-2012 14:21 :: kajagar :: Replies: 1 :: Views: 3153
pls send me hamming encoder using vhdl code ie 16 bit
PLD, SPLD, GAL, CPLD, FPGA Design :: 01-06-2011 08:52 :: swetha.m :: Replies: 0 :: Views: 1158
I need confirmation check in my project
I used a hamming code structure by using matlab,
hamming(7,4), (15,11), (31,26) coder
hamming(7,4), (15,11), (31,26) Decoder
I confused with the results @SNR (...)
Digital communication :: 10-30-2010 21:49 :: realbaltalyus :: Replies: 3 :: Views: 4216
I read from some article that the hamming distance is 2 for IBM 8B/10B code.
(any 1-bit or 2-bit error in a 10-bit codeword can be detected and corrected.)
I'm not sure if that is right?
Digital communication :: 09-21-2010 00:16 :: neoflash :: Replies: 0 :: Views: 1207
Kindly help me,
I was started to study the channel coding since some days ago. Now, in hamming code i found an example in the book (Error Correction Coding) by Todo K. Moon 2005/ chapter one page 34 section 1.9:
given the generator matrix of (4x7):
| 1 1 0 1 0 0 0 |
| 0 1 1 0 1 0 0 |
| 0 0 1
Digital Signal Processing :: 12-06-2009 12:52 :: Aya2002 :: Replies: 1 :: Views: 1056
Do anyone have m-files for simulating Bluetooth GFSK signal using the
the hamming (15,10) expurgation code as described in the Bluetooth Specificatrion document?
Digital Signal Processing :: 10-16-2009 15:41 :: koye88 :: Replies: 0 :: Views: 1030
I am working on BCH code.I am using it to correct 4 bit of error of nand flash memory.
I have already implemented hamming code to correct single bit errors.Below I have shown the steps for hamming implementation
(1)I applied hamming algorithm on 512bytes.
(2)During write operation in nand flash (...)
Digital communication :: 10-09-2009 13:51 :: zoomkrupesh :: Replies: 0 :: Views: 1359
hello every one
I am doing viterbi decoder with vhdl k=3 r=1/2 I have done the encoder part of it and I am middle of deocder I have problem for codding the hamming distance should I do it in trellis codes or branchmertic code can any ine help me please.
thank you in advance
Digital Signal Processing :: 08-17-2009 09:01 :: setareh_mehr85 :: Replies: 3 :: Views: 4984
u can develope some basic encryption and decryption algorithms like RSA, CRC, hamming code for error handling etc. and can develop a crypto syatem.
Digital Signal Processing :: 06-14-2009 05:51 :: hiral.kotak :: Replies: 2 :: Views: 2253
if any body has solution for these questions these questions are from book "wireless communication"
1) All hamming codes have a minimum distance of 3. What is the error-correction and error-detection capability of a hamming code?
2) The (15,11) hamming code has generator polynomial (...)
Digital communication :: 05-30-2009 15:16 :: maree :: Replies: 0 :: Views: 1047
If anyone has a chart/draw of BER= f (SNR) performance for different codes used (hamming, BCH, Reed-Solomon, Convolutional,...) to see whats the best code.
I know its convolutional but i need a draw to show it.
Digital communication :: 04-03-2009 09:02 :: dhazzerr :: Replies: 1 :: Views: 1095
Hello, I am having the age old problem of port synchronization in Simulink. I have created a simulink model to simulate error correction by hamming codes but even with out any channel noise, I am getting error. Would you like to try it out and find a possible solution
Digital communication :: 02-21-2009 15:06 :: Communications_Engineer :: Replies: 1 :: Views: 2725
I am having code for same in VHDL .Check it out whether it is useful to you or not.
If USEFUL PLEASE PRESS HELP BUTTON.
code for hamming Distance Transmission & Reception.
--Program for hamming code TRANSMISSION & RECEPTION .
-- ( generating hamming code parellely , (...)
PLD, SPLD, GAL, CPLD, FPGA Design :: 06-27-2008 14:04 :: victoria_jitesh :: Replies: 8 :: Views: 13422
in the hamming code bits distribution..........wut is the basics for that? is it random or it follows some rules in the distribution of the pits with the original message?
can any1 here elaborate!!!
Digital communication :: 05-31-2008 14:29 :: hamran :: Replies: 0 :: Views: 1127
I have plotted the spectrogram of linear FM signal using TFTB toolbox in Matlab. Here is the code:
My questions are:
How to find peak values of the spectrogram for every time instant (when you have mesh plot)?
How to plot a graph for a constant frequency, that will s
Digital Signal Processing :: 03-04-2008 22:28 :: brano :: Replies: 1 :: Views: 1195
I have a question regarding the performance of hamming code and BCH code
Let's say we want to compare the performance of (7,4) hamming code and (15,7) BCH code.
At 4dB, the hamming code perform better than the BCH code but at 15dB the (...)
Digital communication :: 02-12-2008 07:00 :: TANB0025 :: Replies: 0 :: Views: 1805