Low complexity decoding for higher order punctured trellis-coded modulation over intersymbol interference channels
- Resource Type
- Conference
- Authors
- Schuh, Fabian; Huber, Johannes B.
- Source
- 2014 6th International Symposium on Communications, Control and Signal Processing (ISCCSP) Communications, Control and Signal Processing (ISCCSP), 2014 6th International Symposium on. :475-478 May, 2014
- Subject
- Communication, Networking and Broadcast Technologies
Robotics and Control Systems
Signal Processing and Analysis
Convolutional codes
Complexity theory
Modulation
Estimation
Measurement
Generators
Maximum likelihood decoding
trellis-coded modulation (TCM)
punctured convolutional codes
Viterbi-Algorithm (VA)
reduced state sequence estimation (RSSE)
intersymbol interference (ISI)
- Language
Trellis-coded modulation (TCM) is a power and bandwidth efficient digital transmission scheme which offers very low structural delay of the data stream. Classical TCM uses a signal constellation of twice the cardinality compared to an uncoded transmission with one bit of redundancy per PAM symbol, i.e., application of codes with rates n-1/n when 2 n denotes the cardinality of the signal constellation. Recently published work allows rate adjustment for TCM by means of puncturing the convolutional code (CC) on which a TCM scheme is based on. In this paper it is shown how punctured TCM-signals transmitted over intersymbol interference (ISI) channels can favorably be decoded. Significant complexity reductions at only minor performance loss can be achieved by means of reduced state sequence estimation.