Performance of OFDM system with Modified SLM Technique under fading channel
نویسندگان
چکیده
The popular modulation scheme which offers reliable high bit rate wireless system with reasonable complexity is Orthogonal Frequency Division Multiplexing (OFDM). OFDM is preferred in most high bandwidth efficient transmission systems because it effectively resists Intersymbol Interference (ISI) and is robust towards multipath fading. One of the main factor affecting the performance of an OFDM system is its high Peak to Average Power Ratio (PAPR). This paper presents implementation of communication system based on OFDM with modified selected mapping (SLM) algorithm in reducing the PAPR of the OFDM system. The PAPR and BER performance of OFDM system with modified selected mapping technique for QPSK and DQPSK modulation scheme under AWGN and Multipath Rayleigh fading channel are shown for simulations performed using Matlab tool Simulink. Keywords—OFDM, PAPR, SLM, Modified
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تاریخ انتشار 2015