Channel Diversity in Random Wireless Networks

The goal of this paper is to explore the benefits of channel diversity in wireless ad hoc networks. Our model is that of a Poisson point process of transmitters, each with a receiver at a given distance. A packet is divided in blocks which are transmitted over different subbands that are determined by random frequency hopping. At the receiver, a maximum-likelihood decoder is employed to estimate the transmitted packet/codeword. We find that, if L is the Hamming distance of the employed error correction code and is a constraint on the packet error probability, the transmission capacity of the network is proportional to 1/L , when 0. The proportionality constant depends on the geometry of the symbol constellation, the packet length and the number of receive antennas. This result implies that, at the cost of a moderate decoding complexity, large gains can be achieved by a simple interference randomization scheme during packet transmission. We also address practical issues such as chan...

• Type: Journal
• Year: 2010
• Where: TWC
• Authors: Kostas Stamatiou, John G. Proakis, James R. Zeidler
• Keywords: Artificial Intelligence, Power Control, Transmission Capacity, TWC 2010, Wireless Ad Hoc Networks