Constellation-constrained capacity for trellis code multiple access systems
Paper in proceedings, 2001

Trellis code multiple access (TCMA) is a narrow-band multiple access scheme. There is no bandwidth expansion, so K users are using the same bandwidth as one single user. The load (the number of bits per channel use) of the system is therefore much higher than the load in, for example, conventional CDMA systems. It is shown here that the maximum number of users in a TCMA system is usually modest. This fact is based on constellation-constrained capacity, i.e., the maximum capacity of a system with a specific constellation of the transmitted symbols. The minimum required signal-to-noise ratio for reliable transmission is also given for different code rates.

Author

Fredrik Brännström

Department of Computer Engineering

Tor Aulin

Department of Computer Engineering

Lars K. Rasmussen

Department of Computer Engineering

IEEE Global Telecommunications Conference (GLOBECOM ’'01), San Antonio, TX, Nov. 2001

791-–795

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

DOI

10.1109/GLOCOM.2001.965527

More information

Created

10/7/2017