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On the Performance of Sphere Decoding of Block Codes

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4 Author(s)
El-Khamy, M. ; Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA ; Vikalo, H. ; Hassibi, B. ; Mceliece, R.J.

The performance of sphere decoding of block codes over a variety of channels is investigated. We derive a tight bound on the performance of maximum likelihood decoding of linear codes on q-ary symmetric channels. We use this result to bound the performance of q-ary hard decision sphere decoders. We also derive a tight bound on the performance of soft decision sphere decoders on the AWGN channel for BPSK and M-PSK modulated block codes. The performance of soft decision sphere decoding of arbitrary finite lattices or block codes is also analyzed

Published in:

Information Theory, 2006 IEEE International Symposium on

Date of Conference:

9-14 July 2006