Title :
Interference Distribution in the Nakagami FadingWireless CDMA Ad Hoc Networks with Multi-Code Multi-Packet Transmission (MCMPT)
Author :
Zhang, Lili ; Soong, Boon-Hee
Author_Institution :
Intelligent Syst. Center, Nanyang Technol. Univ.
Abstract :
In this paper, we derive the distribution of multiple access interference (MAI) power for wireless code division multiple access (CDMA) ad hoc networks operating in a general Nakagami-m fading channel model. Furthermore, we propose a multi-code multi-packet transmission (MCMPT) scheme for it to increase the performance, in terms of the expected forward progress. Based on the instantaneous good channel conditions in a Nakagami-m fading channel, a node can initiate flexible number of parallel transmission of multiple packets on multiple codes. Numerical results show that adaptive MCMPT considering varying channel conditions not only outperforms the nonadaptive conventional packet transmission (CPT), but also achieves better progress improvement with the increasing values of parameter m in a slowly-varying Nakagami-m fading channel
Keywords :
Nakagami channels; ad hoc networks; code division multiple access; radiofrequency interference; Nakagami fading wireless CDMA ad hoc networks; Nakagami-m fading channel model; adaptive multi-code multi-packet transmission scheme; interference distribution; multiple access interference power; nonadaptive conventional packet transmission; parallel transmission; wireless code division multiple access; AWGN; Ad hoc networks; Fading; Intelligent networks; Multiaccess communication; Multiple access interference; Nakagami distribution; Power system modeling; Spread spectrum communication; Throughput;
Conference_Titel :
Local Computer Networks, 2005. 30th Anniversary. The IEEE Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7695-2421-4
DOI :
10.1109/LCN.2005.78
