Viterbi

Implements soft-decision Viterbi decoding for a rate 3/4 code over an AWGN channel using Simulink.The Viterbi decoder block from the Communications Blockset is enhanced to optimally support punctured codes.The attached BERTool session file compares the BER performance as the number of bits are...

Convolutional Encoder of Code Rate=1/2, with 3 Memory Elements and a corresponding Hard Decision Viterbi Decoder

General implementation of matlab version of Viterbi algorithm specifically written for gene structure finding problem in mind. However, it can be modified to suit the goal of a user.Input:Transition Probability MatrixEmission Probability MatrixInitial Probability MatrixStates Matrix (ie....


Platforms: Matlab

The submission considers a case where you deduce what weather it is given the status of a shirt that is hung outside. The weather could be Sunny, cloudy, Rainy and the shirt could be dry, dryish, damp etc. Now given some probability matrices (The initial probability of the weather, the transition...


Platforms: Matlab

CVencode.m % function for CV encoding (arbitrary CV code)VAharddecode1.m % function for Viterbi hard decision decodingCVsimhard.m basic CV coding/decodingBERcurve_CV_hard.m computes simulated BER curveUTILITY FUNCTIONSgetcodeparametersbin2decideci2bin


Platforms: Matlab

Forward Viterbi algorithm based on the Python code found at: http://en.wikipedia.org/wiki/Viterbi_algorithmAlso included is an example based on the one from the Wikipedia page for a simple 2-state model with 4 observations. To paraphrase:Bob tells Alice his daily activities (observations) and...


Platforms: Matlab

This packet is a IS-95 baseband simulation for 1 data channel of 9.6 KBps rate. The simulation is written for static channel and AWGN noise.The packet include:1) Packet Builder (Viterbi Encoding, Interleaver, PN generation)2) Modulator (RRC filter)3) Demodulator (Matched Filter, RAKE receiver)4)...


Platforms: Matlab

Computes BER v EbNo curve for convolutional encoding / soft decision Viterbi decoding scheme assuming BPSK.Brute force Monte Carlo approach is unsatisfactory (takes too long) to find the BER curve.The computation uses a quasi-analytic (QA) technique that relies on the estimation (approximate one)...


Platforms: Matlab

Features:- End-to-end 802.11a physical layer - All mandatory and optional data rates: 6, 9, 12, 18, 24, 36, 48, and 54 Mb/s- BPSK, QPSK, 16-QAM, 64-QAM modulations- Forward error correction coding (convolutional; code rates 1/2, 2/3, 3/4)- OFDM transmission: 52 subcarriers, 4 pilots, 64-pt FFTs,...


Platforms: Matlab

This application example implements an end-to-end baseband communications system compliant to the US MIL_STD_188_110B intended for long-haul and tactical communications.This model supports four different data rates: 1200bps, 600bps, 300bps and 150bps. It also implements two different interleaver...


Platforms: Matlab

CHAPTER 1: FOURIER ANALYSIS1.1 CONTINUOUS-TIME FOURIER SERIES (CTFS)1.2 PROPERTIES OF CTFS 1.2.1 Time-Shifting Property 1.2.2 Frequency-Shifting Property 1.2.3 Modulation Property1.3 CONTINUOUS-TIME FOURIER TRANSFORM (CTFT)1.4 PROPERTIES OF CTFT 1.4.1 Linearity 1.4.2 Conjugate Symmetry 1.4.3 Real...


Platforms: Matlab

Embedded MATLAB block provides a way of bringing restricted subset of MATLAB into Simulink. There are couple of possibilities when moving untimed MATLAB algorithms into Simulink. This demo illustrates two such alternatives in porting a sample viterbi algorithm (written in M) into Simulink using...


Platforms: Matlab