Slotted ALOHA mobile packet communication systems with multiuser detectionin a base station

A slotted ALOHA mobile packet communication system utilizing the multiuser detection (MD) is proposed for system enhancement. MD can be easily impleme nted by using an adaptive interference canceler, Employment of MD enables s imultaneous detection of several collision packets, which results in system enhancement increasing the throughput and shortening the average delay tim e, Detailed theoretical analysis and computer simulation with a two-user si multaneous detection in a single-cell environment shows: 1) the throughput increases twice as much as the conventional one and 2) the average delay ti me decreases by 50%.