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59 Threads found on edaboard.com: Hamming Code
Have you read the following on hamming (7,4) code? Here is an example for a larger one too.
Hello 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 ? Thank you.
hello.. 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. Thank you
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 (...)
How to measure bit error rate in Matlab using hamming code?
Hi, Can any body tell me how does the hamming code Work for the detection of two bit errors in digital Communication?
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 (...)
hiii........... please give me a solution.
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
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.
...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
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 a=0.95; aaaa1=filter(,1,aaaaa1); aaa1= melcepst(aaaa1,fs); i get an output for the different samples of me saying one as 54
Hi 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 (...)
Hi Nego Linear block codes can be represented as c=mG 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. cH^T=0 Just multiply the receive code word by H^T. If
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. Example: The original transmitted hamming code is 100111010101111 but the received code is 111111011101111. SHOW how the parity bits indicate the position of the errors (...)
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)* (...)
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
Does anyone has 512 bytes data n calculated ECC using hamming algorithm..?
You must to apply some checking code, as hamming, CRC, etc... Here there are some examples with CRC coding : +++
in the below code of hamming code how does that if statements work?? der wat does ^ it xor??? plz help me out module hamm_enc(outp,inp,reset); parameter n=11,k=7; output outp; input inp; input reset; reg outp; integer i,j; always @(inp or reset) begin if(reset) outp = 0; else be
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
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
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
Hi, 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
--encoder parameter n=11,k=7; output out; input in; input reset; reg out; integer i,j; always @(in or reset) begin if(reset) out = 0; else begin i=0; j=0; while((i
hi i want to do hamming distance reordering of test data any 1 tell me how to work on code in verilog
Hello 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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (...)
Hello friends: 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 (...)
hello,r u having source code and details of this hamming code design in verilog fpga,if, please send to my email
hi, pls send me hamming encoder using vhdl code ie 16 bit
Hi Everybody, I need confirmation check in my project I used a hamming code structure by using matlab, the scenario random data hamming(7,4), (15,11), (31,26) coder qpsk modulator awgn channel qpsk demodulator hamming(7,4), (15,11), (31,26) Decoder I confused with the results @SNR (...)
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?
Dear Friends, 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
Hi there! 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? Regards, Koye88
Hi All, 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 (...)
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
hi, u can develope some basic encryption and decryption algorithms like RSA, CRC, hamming code for error handling etc. and can develop a crypto syatem. Thanks.. HAK..
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 (...)
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. Thank you.
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
hi, I need of verilog code for hamming code please reply...........
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!!!
I have plotted the spectrogram of linear FM signal using TFTB toolbox in Matlab. Here is the code: y=fmlin(128,0.1,0.3); h=tftb_window(21,'hamming'); tfrsp(y,1:128,128,h,1); 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
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 (...)
hi all WHATE IMEAN OF (hamming codes, convolutional encoder and viterbi decoder ) thanks
hi frds i want to implement hamming code for my application. plse give if any one having complete details about hamming code thanx and regards tinku123
Below are the code of hamming code in MPlab Can someone explain it briefly to me what the code mean (in theorythically i can understand how it work but when it in source code then i totally blur..) hamming code generator ; ;Since our communication is one way, we'll (...)
hi , i am doinga project on soft output viterbi decoder, i have a cofusion between soft viterbi and hard viterbi, will , replacing hamming distance by euclidean distance become soft output viterbi decoder. please send me some material regarding this.
Willt, See the Google using keywords, "hamming", ECC. Regards, Kral
hi, could u guys explain me what hamming distance is all about?that is i read that if the minimum hamming distance is satisfied,then it is possible to correct your codes.how is this achieved?please help....