DocumentCode :
290993
Title :
An application of trellis coded modulation to digital microwave radio and its performance
Author :
Tanaka, Hirokazu ; Matsushima, Tomoko K.
Author_Institution :
Toshiba Corp., Tokyo, Japan
Volume :
1
fYear :
1993
fDate :
23-26 May 1993
Firstpage :
128
Abstract :
The authors describe a modified symbol-rate-increased TCM (trellis coded modulation) for digital microwave radio systems. The symbol-rate-increased TCM accomplishes coding redundancy through bandwidth expansion instead of through signal point expansion, in order to obtain a greater coding gain than the Ungerboeck-type TCM. However, this scheme requires the bandwidth to be expanded by a fixed factor m/(m-1) for a 2mQAM (quadrature amplitude modulation) system. The proposed scheme allows the bandwidth expansion ratio to be varied to an arbitrary value smaller than m/(m-1). Simulation results have clarified that the proposed scheme achieves a significant improvement over an uncoded scheme
Keywords :
digital radio; quadrature amplitude modulation; redundancy; trellis coded modulation; bandwidth expansion; coding gain; coding redundancy; digital microwave radio; performance; quadrature amplitude modulation; symbol-rate-increased TCM; trellis coded modulation; Bandwidth; Bit error rate; Block codes; Communications technology; Constellation diagram; Digital modulation; Error correction codes; Laboratories; Microwave technology; Modulation coding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
Type :
conf
DOI :
10.1109/ICC.1993.397242
Filename :
397242
Link To Document :
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