Joint sequential decoding and noncoherent multiuser detection for synchronous signaling over a flat fading channel
ABSTRACT This paper considers the problem of joint multiuser detection and
decoding of data transmitted over a frequency nonselective Rayleigh
fading channel, where the detection is performed without previous
knowledge of the channel coefficients. Both detection and decoding are
carried out jointly by means of a sequential decoder. We derive a metric
matched to the above problem which is based on the well-known Fano
(1963) metric and discuss its properties. Using computer simulation, we
evaluate the performance of a sequential decoder that uses this metric
in conjunction with the stack algorithm. Our simulation results show
that the proposed algorithm outperforms a receiver that uses optimum
multiuser detection and optimum soft decision decoding as two separate
steps, however at the cost of even larger time complexity
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Article: Interpreting Quantum Field TheoryPhilosophy of Science. 01/2002; 69(2):348-378.
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