Title :
Multiuser detection for up-link throughput enhancement in mobile packet communications
Author :
Suzuki, Hiroshi ; Shinomiya, Takeshi
Author_Institution :
Tokyo Inst. of Technol., Japan
Abstract :
A slotted ALOHA mobile packet communication system utilizing the multiuser detection (MD) is proposed for system capacity enhancement. MD can be easily implemented by using an adaptive interference canceller. Employment of MD enables simultaneous detection of several packets in a collision, which results in system enhancement for increasing the throughput and shortening the average delay time. Detailed theoretical analysis and computer simulation for two multiuser detection in a single cell environment shows: (i) the throughput increases twice as much as that of the conventional one, and (ii) the average delay time becomes half
Keywords :
adaptive signal detection; adaptive signal processing; carrier sense multiple access; cellular radio; channel capacity; delays; interference suppression; multiuser channels; packet radio networks; radio links; radiofrequency interference; CSMA; adaptive interference canceller; average delay time; carrier sense multiaccess; collision; mobile packet communications; multiuser detection; packet detection; single cell environment; slotted ALOHA; system capacity enhancement; throughput; up-link throughput enhancement; Base stations; Computer simulation; Delay effects; Fluctuations; Frequency synchronization; Interference cancellation; Maximum likelihood estimation; Mobile communication; Multiuser detection; Throughput;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686533
