Title :
Rate-selectable multimode trellis-coded 8PSK system
Author :
Nakajima, Shigeo
Author_Institution :
Dept. of Inf. & Electron. Eng., Niigata Inst. of Technol., Japan
Abstract :
A multimode method for trellis-coded modulation (TCM) is proposed to construct various rate TCM schemes. The multimode trellis-coded (TC) 8PSK schemes with rates of 1/2, 4/9, 5/9, 5/12, and 7/12 are demonstrated. These are obtained from the combination of conventional single-mode TC-8PSK with rates 1/3 and 2/3. By investigating the trellis structure and code search, a new multimode trellis diagram is found, which provides a better Euclidean distance property than that by merely combining optimum single-mode trellis diagrams. As for bit error rate (BER) performances, the BER expression is derived and estimated for multimode TCM schemes
Keywords :
coding errors; error statistics; phase shift keying; trellis coded modulation; BER; Euclidean distance; bit error rate; code design; code search; multimode TCM; multimode trellis diagram; multimode trellis-coded system; optimum single-mode trellis diagrams; rate-selectable 8PSK system; trellis-coded modulation; Adaptive control; Adaptive systems; Bit error rate; Continuous phase modulation; Convolutional codes; Decoding; Error correction; Euclidean distance; Modulation coding; Programmable control;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686595
