Novel approach: Codec design for WiMax system

Wireless communication is the fastest growing segment of the communication industry. New services are being added and data is provided at higher bit rates to the end users. With these advancements any communication system has to critically consider data integrity. This requires, maintaining a lower bit error rate. Present work focuses on the Broadcast Wireless Access standard named WiMax (Worldwide Interoperability for Microwave Access). Possible options for maintaining a lower bit error rate in WiMax System are worked out. In particular a Novel Approach which uses a concatenation of RS (Reed-Solomon) and Turbo Codes for the Codec design in The WiMax Communication System is presented. The paper also discusses use of OQPSK Modulation Technique in place of the conventional QPSK system, for performance improvement. The comparative simulation results of existing WiMax System and the system using the novel approach are also provided. These results are used to draw useful conclusions for reducing the bit error rate in the WiMax System.