Performance Evaluation of the PHY & MAC for WLAN Systems and Efficiency Improvement by Application of Convolution Codes
This Paper describes the performance Evaluation of PHYsical layer (PHY) in WLAN System. A MATLAB simulation is carried out on WLAN baseband processor/transceiver. Orthogonal Frequency Division Multiplexing (OFDM) is applied in this project according to the IEEE 802.11 a standard, which allows Transmission of data rates from 6Mbps up to 54 Mbps. Distinct modulation schemes as Binary Phase Shift Keying (BPSK), Quadrate Phase Shift Keying (QPSK) and Quadrature Amplitude Modulation (QAM) are used according to differing data Rates for Signal visualization at each block of Transceiver. Simulation is carried to measure Bit Error Rate (BER), Symbol error rate & to measure Number of data bits, coded bits in OFDM symbol by using different modulation & Code rate.