Title :
Multiple trellis coded modulation using CPFSK signals
Author :
Toufanian, Masoud ; Tan, Harry H.
Author_Institution :
LinCom Corp., Seabrook, MD, USA
Abstract :
Multiple trellis-coded modulation schemes which combine two-state rate-2/4 multiple convolutional codes with CPFSK (continuous-phase frequency shift keying) modulation are considered. A computer search yielded such schemes with larger Euclidean free distances than previously considered rate-1/2 convolutionally encoded CPFSK modulation at the same bandwidth efficiency and demodulation complexity. Specifically, this search yielded schemes which were up to 3.5 dB more power efficient than the TCM schemes of G. Lindell et al. (1984) of the same bandwidth efficiency and decoding complexity
Keywords :
error correction codes; frequency shift keying; CPFSK signals; Euclidean free distances; bandwidth efficiency; demodulation complexity; multiple trellis-coded modulation; two-state rate-2/4 multiple convolutional codes; Bandwidth; Continuous phase modulation; Convolution; Convolutional codes; Demodulation; Frequency shift keying; Hamming distance; Modulation coding; Quadrature amplitude modulation; Satellite communication;
Conference_Titel :
Military Communications Conference, 1991. MILCOM '91, Conference Record, Military Communications in a Changing World., IEEE
Conference_Location :
McLean, VA
Print_ISBN :
0-87942-691-8
DOI :
10.1109/MILCOM.1991.258423
