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In this paper, we investigate the use of block spread (BS) and frequency hopping (FH) techniques in coded interleaved frequency division multiple access (IFDMA) systems to achieve maximum channel diversity order. We derive the upper bound on the theoretical bit error rate (BER) that shows the maximum achievable diversity order under maximum likelihood sequence estimation (MLSE). Next, we establish...
We introduce an iterative decoding algorithm for the decoding of coded interleaved frequency division multiple access (IFDMA) system in this paper. The iterative decoding algorithm incorporates a low complexity a posterior probability (APP) detector based on breadth-first tree search algorithm with a soft-input soft-out (SISO) error-correcting codes (ECC) decoder. The proposed detector combines the...
In this paper, a low complexity a posterior probability (APP) detector based on breadth-first tree search algorithm is purposed for coded interleaved frequency division multiple access (IFDMA) system. The proposed detector combines the principles of the M-algorithm with QR decomposition (QRD-M) to generate soft decision statistics in place of the full APP detector which has a high computational cost...
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