Abstract
This paper focuses on the application of Reed-Solomon Error Correction Code evaluation technique on the Bit-Error-Rate performance of M-ary Frequency Shift Keying (M-FSK) in noisy multipath Rayleigh and Rician fading channel. The detection and correction of the received information errors from the multipath fading channel was done using the Forward Error Correction (FEC) technique. The message is encoded and decoded using the error-correcting Reed-Solomon Codes were employed to encode and decode the message. The entire model based design, modelling and simulation was done using MATLAB/SIMULINK. It was observed that the BER performance of M-FSK with RS codes improved greatly compared to M-FSK system without error correction. Decrease of BER performance was observed as the length of codeword symbols (n) increase at constant code rate and error correcting capability. The redundancy increases as code rate decreases leading to an improved Bit-Error-Rate performance. The improvement of the BER of M-FSK by using Reed-Solomon error correction code was achieved.
Highlights
Modern mobile and wireless communication systems adopt digital modulation scheme as an essential module for signal processing instead of previously used analog modulation
It is observed from the simulation results that the bit error rates (BER) performance of the M-ary Frequency Shift Keying (M-Frequency Shift Keying (FSK)) system with Reed-Solomon Forward Error Correction (FEC) is much better under multipath Rician fading channel than under multipath Rayleigh fading channel
It is observed that the BER improves as the codeword symbols (N) decreases from 127 to 16 for different values of Energy per symbol to Noise power spectral density (Es/No).It is observed from the simulation results that at constant code rate, the BER performance of the M-FSK system with ReedSolomon FEC is much better under multipath Rician fading channel than under multipath Rayleigh fading channel
Summary
Modern mobile and wireless communication systems adopt digital modulation scheme as an essential module for signal processing instead of previously used analog modulation. The major disadvantage is its high bandwidth requirement and poor BER performance when compared to other digital modulation techniques like BPSK and QPSK. It is meaningful to adopt ways of improving the performance of a wireless mobile communication system with the deployment of M-ary (MFSK) modulation technique. Frequency Shift Keying (FSK) modulation scheme in a channel characterized by noise, Rayleigh fading (Non Line of Sight(LOS) fading),and Rician fading (LOS fading) using the Reed-Solomon Forward Error Correction method. [2] In their paper, BER performance of M-FSK was tested under multichannel environments AWGN, Rayleigh fading and Rician fading channels with coherent and non- coherent demodulation and different sizes of modulation constellation. [3] In their paper, observed that the BER performance improves as the length of codeword symbols (n) increase at constant code rate Rc and error correcting capability increases
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
