Turbo Decoder for Low-Power Ultrawideband Communication Systems

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Executive Summary

A new method to reduce the computational complexity of the turbo decoding in UltraWideBand (UWB) Orthogonal Frequency Division Multiplexing (OFDM) system is proposed. Existing stopping techniques for turbo decoding process using constrained decoding assume fixed Signal-to-Noise Ratio (SNR) for all the OFDM symbol bits so they fail to yield an acceptable Bit-Error Rate (BER) performance in multicarrier systems. In this paper, the authors propose a bit-level stopping technique for turbo decoding process based on the constrained decoding method.

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