Home > Bit Error > Bit Error Rate Related Problem# Bit Error Rate Related Problem

## Acceptable Bit Error Rate

## Bit Error Rate Measurement

## Simulate performance of this system for SNR b = 7, 8, 9, 10, 11 dB and find the symbol and bit error rates.

## Contents |

Reply Krishna Sankar September 18, 2012 at 5:38 am @ebtesam jumma: For the BPSK BER in Rayleigh channel case, please take a look at http://www.dsplog.com/2008/08/10/ber-bpsk-rayleigh-channel/ http://www.dsplog.com/2008/08/26/ofdm-rayleigh-channel-ber-bpsk/ http://www.dsplog.com/2009/01/22/derivation-ber-rayleigh-channel/ Reply vanness August Since this is a statistical process, the measured BER only approaches the actual BER as the number of bits tested approaches infinity. Computing the probability of error Using the derivation provided in Section 5.2.1 of [COMM-PROAKIS] as reference: The received signal, when bit 1 is transmitted and when bit 0 is transmitted. Reply Krishna Sankar July 18, 2012 at 6:41 am @khushi: my replies 1. this contact form

I try the matlab function using demodh= modem.pskdemod(ht, ‘outputType', ‘bit','DecisionType', ‘LLR', ‘NoiseVariance', sigma); dec_inputt=demodulate(demodh,rt); but the bit that I'm receive sort like it have inverse sign. Reply yahya April 12, 2012 at 4:52 pm pleas Mr I would like to help me to find calculation BER vs SNR when using 64DAPSK modulation with DWT-OFDM in This is because **each type of** modulation performs differently in the presence of noise. For small bit error probabilities, this is approximately p p ≈ p e N . {\displaystyle p_{p}\approx p_{e}N.} Similar measurements can be carried out for the transmission of frames, blocks, or

Bit-error rate curves for BPSK, QPSK, 8-PSK and 16-PSK, AWGN channel. what and where would u start from? EbN0 curve is higher!!!!

But I have question about the comment of this line in your codes s = 2*m-1; % BPSK modulation 0 -> -1; 1 -> 0 I think maybe you want to Comment: Submit Back to top Browse Definitions Alphabetically A B C D E F G H I J K L M N O P Q R S T U V W For this example, we will simply choose Time and set it to 10 seconds. Bit Error Rate Calculator buffer overflow A buffer overflow occurs when a program attempts to write more data to a fixed length block of memory, or buffer, than the buffer is allocated to hold.

Measuring the bit error ratio helps people choose the appropriate forward error correction codes. Bit Error Rate Measurement Reply Krishna Sankar July 24, 2012 at 5:40 am @candy: To convert to a distance, one needs to know - Transmit power, Path loss, Receive noise power The SNR, dB at Make sure that you do not miss a new article by subscribing to RSS feed OR subscribing to e-mail newsletter. What is the minimum Es/NodB to guarantee a P(e) < 10^-5?

Below is the answer you gave me for my concern on this formular 10^(-Eb_N0_dB(ii)/20)*n "Do not change the division factor. Bit Error Rate Tester Software The parser has ... Now you may view the results. thanks Reply Krishna Sankar September 18, 2012 at 5:45 am @pawan: you can either use the visual information from the ber plot to find the minimum snr required to hit a

This site uses cookies. Reply Yamsha December 5, 2012 at 1:53 am Thanks a lot! Acceptable Bit Error Rate I think for FSK coherent demodulation, which uses 0/1 modulation has 3dB poorer BERwhen compared to BPSK http://www.dsplog.com/2007/08/30/bit-error-rate-for-frequency-shift-keying-with-coherent-demodulation/ Reply Emmanuel December 7, 2011 at 12:32 pm Do you have code Bit Error Rate Pdf Reply Krishna Sankar December 25, 2012 at 5:46 am @Vishnavi: Sorry, I do not know the topic.

I got QPSK constellation how to get Pi/4 rotated constellation for QPSK Reply Krishna Sankar January 23, 2012 at 5:08 am @Thiygai: I do not think I ‘ve discussed pi/4 QPSK. http://performancepccanada.com/bit-error/bit-error-rate-and-data-rate-relation.php But, the program din't work. thanks a lot… Reply **Krishna Sankar** December 23, 2009 at 5:47 am @adah: what is the problem which you are seeing? Total probability of bit error . Bit Error Rate Tester

Reply Vishnavi December 24, 2012 at 7:16 am Hi ,I need program for BER reduction using SSPA(solid state power amplifer ) model .or else BER reduction using PTS scheme. While every effort is made to ensure the accuracy of the information on Radio-Electronics.com, no liability is accepted for any consequences of using it. However, even with a bit error rate below what is ideally required, further trade-offs can be made in terms of the levels of error correction that are introduced into the data http://performancepccanada.com/bit-error/bit-error-rate-problem.php reply Can you little bit tell me how to simulate the Uncoded BER and ergodic capacity for webb channel using QPPM modulation.

becouse when i changed M to 8 i got an output and no errors pls answer me it's very importanat thanks alot man Reply Krishna Sankar November 15, 2010 at 2:12 Bit Error Rate Testing A packet is declared incorrect if at least one bit is erroneous. The bit error ratio can be considered as an approximate estimate of the bit error probability.

Reply Ananya March 21, 2010 at 6:28 pm hello sir, m doing ma project on ber calculation using matlab simulation for ofdm transmission for multipath wireless communication so please if Alternating 0s and 1s - A pattern composed of alternating ones and zeroes. 2 in 8 – Pattern contains a maximum of four consecutive zeros. But in this code for BPSK modulation I never found the usage of such things.. Bit Error Rate Tester Agilent The bit error rate (BER) is the number of bit errors per unit time.

The conditional probability distribution function (PDF) of for the two cases are: . Lower levels of noise will be received and therefore the signal to noise ratio will improve. It is about the square root raised cosine pulse ,we need to plot it with different roll-off factor(B=0.25,B=0.5,B=1. http://performancepccanada.com/bit-error/bit-error-rate-calculation-problem.php meaningful use stage 3 Meaningful use stage 3 is the third phase of the federal incentive program that details requirements for the use of electronic health record systems by hospitals and

Microsoft Sway Microsoft Sway is a presentation tool in Microsoft’s Office suite of its business productivity apps. i.e. Reply Yamsha December 4, 2012 at 2:30 am Hi! it's my project it uses modBPSK and PN but i'm not good at matlab programming can you help me about it ?

For each of the following cases, decide if the received signal is best described as undergoing fast/slow fading, frequency selective fading or flat fading. (a) The mobile node is sending at But discussion of a close cousin MSK is kept @ http://www.dsplog.com/2009/06/16/msk-transmitter-receiver/ For QPSK you can refer to http://www.dsplog.com/2007/11/06/symbol-error-rate-for-4-qam/ Reply abhay January 16, 2012 at 11:46 am the above graph shows clear; clf; M=16; % for simulink snr=0:10; err_vec=[]; for i=1:length(snr) EbNo=snr(i); sim(‘QAM_16′); err_vec(i)=bit_err_rate(1); end; semilogy(EbNo,err_vec,'b-*'); grid on please guide what is the error in this code… thanks Reply Krishna Sankar November The division by 20 is required to convert dB into voltage”.

Yamsha Reply trung tong December 1, 2012 at 4:23 pm Hi Krishna, Can we use importance sampling to measure the BER very small (below 10^-10) ? By manipulating the variables that can be controlled it is possible to optimise a system to provide the performance levels that are required. All Rights Reserved,Copyright 1999 - 2016, TechTarget About Us Contact Us OverviewSite Index Privacy policy AdvertisersBusiness partnersTechTarget events Media kit TechTarget Corporate site Reprints Site map Here’s the page we think Reply Thiyagi December 29, 2011 at 11:50 am Yes mr.Krishna i'm getting bit error rate as zero without adding noise i.e not used ‘awgn' function to add noise Reply Thiyagi December

I used ‘ber' as an array to store the values of bit error ratio since biterr is an inbuilt fuction and [n,b] where ‘b' bit error ratio for a particular snr Reply Krishna Sankar November 2, 2012 at 6:43 am @Manoj: This post (and the matlab code) on BER of BPSK in AWGN is addressing most of your queries. This pattern is also the standard pattern used to measure jitter. 3 in 24 – Pattern contains the longest string of consecutive zeros (15) with the lowest ones density (12.5%). It transmits a signal to the base station at a center frequency of fc = 1 GHz using a binary modulation at a data rate R.

Good luck. Reply Krishna Sankar March 30, 2010 at 5:00 am @DaMarco: You can use the Matlab model provided in this post as a reference for the C code Reply gurinder February