Mobility

A New Approach for FEC Decoding Based on the BP Algorithm in LTE and WiMAX Systems

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Executive Summary

Many wireless communication systems such as IS- 54, Enhanced Data rates for the GSM Evolution (EDGE), Worldwide interoperability for Microwave Access (WiMAX) and Long Term Evolution (LTE) have adopted Low-Density Parity-Check (LDPC), tail-biting convolutional, and turbo codes as the Forward Error Correcting codes (FEC) scheme for data and overhead channels. Therefore, many efficient algorithms have been proposed for decoding these codes. However, the different decoding approaches for these two families of codes usually lead to different hardware architectures. Since these codes work side by side in these new wireless systems, it is a good idea to introduce a universal decoder to handle these two families of codes.

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