A New Block-Coded Modulation Scheme for Rayleigh Fading Channel, Soft Output Decoding Issues
نویسندگان
چکیده
We investigate the application of the sum-product algorithm to the decoding of a q-ary Block-Coded Modulation (BCM) scheme which is based on extending the parity check equations of a binary block code to q-ary symbols. This is achieved by decomposing the code into a sub-code with an acyclic Tanner graph and its cosets which. are represented by a trellis diagram. The combination of these two cyclefree graphs are used to develop an efficient soft output decoding algorithm for the given code.
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