Performance Improvement of IEEE 802.22 With Different FEC techniques

Wireless communication is very vast and having lot of ideas for increasing capacity and BER performance. This paper describes the modeling and performance improvement of Wireless Regional Area Network (WRAN) ( IEEE 802.22 ) through different Forward Error Correction (FEC) Techniques.In this paper we have used different coding techniques over different modulation scheme. For simulation , we have used MATLAB and obtained different BER curves for different modulation scheme at different FEC Techniques. In final conclusion we have found BER performance of different modulation schemes over different FEC codes. OFDMA technique is used and the channel considered is AWGN. Keywordscomponents :IEEE 802.22,WRANs,OFDMA, cognitive radio ,