Title :
A performance comparison between ad hoc and centrally controlled CDMA wireless LANs
Author :
Bao, Jeffrey Q. ; Tong, Lang
Author_Institution :
Broadband Networks Res. Lab., Motorola Inc., Mansfield, MA, USA
fDate :
10/1/2002 12:00:00 AM
Abstract :
A performance comparison is presented between two types of code-division multiple-access wireless local area networks: centrally controlled and ad hoc networks. Based on a finite-population model, the network throughput, the average packet delay, and the network first exit time are derived for both systems. Two aspects of the performance comparison are addressed: (1) the comparison between the centrally controlled and the ad hoc architecture; and (2) the impact of spreading gain and error control coding on both systems. The efficiency of bandwidth utilization is investigated by normalizing the network performance with respect to the consumed bandwidth. Evaluations of these performance comparisons are also provided.
Keywords :
access protocols; code division multiple access; delays; error correction codes; packet radio networks; performance evaluation; telecommunication control; wireless LAN; Internet; ad hoc wireless LAN; average packet delay; bandwidth utilization efficiency; centrally controlled CDMA wireless LAN; code-division multiple-access; error control coding; finite-population model; network architecture; network first exit time; network performance; network throughput; performance comparison; slotted Aloha random access protocols; spreading gain; Ad hoc networks; Bandwidth; Centralized control; Control systems; Delay effects; Error correction; Multiaccess communication; Performance gain; Throughput; Wireless LAN;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2002.805092
