Performance of a trellis-coded 16QAM/TDMA system for land mobile communications

• Published in: IEEE transactions on vehicular technology Vol. 43; no. 3; pp. 528 - 536
• Main Authors: Kamio, K., Sampei, S.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-08-1994; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Automatic frequency control; Diversity reception; Equipments and installations; Exact sciences and technology; Fading; Frequency synchronization; ISDN; Mobile communication; Mobile radiocommunication systems; Quadrature amplitude modulation; Radiocommunications; Rayleigh channels; Telecommunications; Telecommunications and information theory; Time division multiple access; Timing; Fading; Mobile radiocommunication; Time division multiple access; Phase shift keying; Spectral efficiency; Computer simulation; Bit error rate; Trellis code; Quadrature modulation
• ISSN: 0018-9545; 1939-9359
• DOI: 10.1109/25.312794

Trellis-coded 16QAM/TDMA systems are proposed that have a high spectral efficiency and high transmission quality and that can support a wide variety of services. A digital pilot-symbol-aided channel sounding scheme, as well as diversity reception with maximal ratio combining, are used to compensate for fading. To further improve transmission quality, symbol interleaving and two-frequency hopping are used in the trellis-coded 16QAM/TDMA system. Computer simulation demonstrates that the bit error rate (BER) performance and the spectral efficiency of the trellis-coded 16QAM/TDMA cellular system are superior to those of /spl pi//4-QPSK/TDMA used in the American and Japanese digital cellular standards. It is also demonstrated that the trellis-coded 16QAM/TDMA with diversity, symbol interleaving, and frequency hopping can achieve a BER of about 10/sup -4/ if the delay spread is 0.1 T/sub s/.< >