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In this paper a novel scheme is introduced to perform the soft input decoding of Reed Solomon Codes using iterative bit flipped decoding based on the LLRs of the received bits. MAP is used as the inner decoder to obtain the LLRs for the decoded bits at the receiver. In case of decoding failure or a decoding error by the outer RS decoder, a combination of bits from the received word are flipped based...
The recently approved IEEE 802.15.4a standard defines an ultra-wideband (UWB) based physical layer using concatenated coding with mixed binary phase-shift keying and binary pulse-position modulation (BPSK-BPPM) and direct-sequence spreading with time hopping. The concatenated code consists of an outer Reed-Solomon (RS) and an inner convolutional code, and the coding and modulation are combined such...
In this paper, we study the effect of various concatenated forward error correction (FEC) codes on the performance of a wireless orthogonal frequency division multiplexing (OFDM) system. In FEC concatenated channel code, the OFDM system incorporates Reed-Solomon (RS) encoder of (255,239,8), Cyclic Encoder of (15,11), Bose-Chadhuri-Hocquenghem (BCH) encoder of (127,64) with Convolution encoder of 2...
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