Serial Concatenated TCM With an Inner Accumulate Code—Part I: Maximum-Likelihood Analysis

H.M. Tullberg, P.H. Siegel
2005 IEEE Transactions on Communications  
In this paper, we propose a serial concatenated trellis-coded modulation system using one or more inner rate-1 accumulate codes and a mapping to a higher order, Gray-labeled signal constellation. As outer codes, we consider repeat codes, single parity-check codes, and convolutional codes. We show that under maximum-likelihood decoding, there exists a signal-to-noise ratio threshold beyond which the bit-error probability goes to zero as the blocklength goes to infinity. We then evaluate the
more » ... rmance for finite blocklengths using a modified union bound. Computer simulations demonstrate that the proposed system, despite its use of a simple rate-1 inner code, achieves performance in additive white Gaussian noise and Rayleigh fading that is comparable to, or better than, that of more complex systems suggested in the literature.
doi:10.1109/tcomm.2004.840630 fatcat:5xun2gpadnfkzdan7tz66z7ymu