Serial Concatenated Turbo TCM Coding Scheme for Enhanced VSB

Anovel turbo-TCM scheme based on concatenated tree codes

Tree codes are introduced in [4]. As examples, the encoding principles of two different tree codes are shown in Fig. 1 using Bayesian networks. Here, every node represents a bit in the code, distinguished by a white one (such as dk,0) for an information bit and a black one (such as qk ) for a parity bit. The latter is the parity check of the starting nodes of its incoming edges. Denote the kth ...

A Serial Concatenated Coding Scheme with Iterative 'Turbo'- and Feedback Decoding

Concatenated space-time block codes and TCM, turbo TCM, convolutional as well as turbo codes

Space-time block codes provide substantial diversity advantages for multiple transmit antenna systems at a low decoding complexity. In this paper, we concatenate space-time codes with Convolutional Codes (CC), Turbo Convolutional codes (TC), Turbo BCH codes (TBCH), Trellis Coded Modulation (TCM) and Turbo Trellis Coded Modulation (TTCM) schemes for achieving a high coding gain. The associated p...

Multilevel Input Ring-Tcm Coding Scheme: a Method for Generating High-Rate Codes

The capability of multilevel input ring-TCM coding scheme for generating high-rate codes with improved symbol Hamming and squared Euclidean distances is demonstrated. The existence of uniform codes and the decoder complexity are also considered.

Unveiling turbo codes: some results on parallel concatenated coding schemes

A parallel concatenated coding scheme consists of two simple constituent systematic encoders linked by an interleaver. The input bits to the rst encoder are scrambled by the interleaver before entering the second encoder. The codeword of the parallel concatenated code consists of the input bits to the rst encoder followed by the parity check bits of both encoders. This construction can be gener...