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Transport capacity of large wireless CDMA ad hoc networks

In this paper, the transport capacity -the transported bit-meters per symbol period per node, and the space time spectrum power efficiency - the transported bit-meters per Hz per second per square meter per watt for large wireless CDMA ad hoc networks is studied. Node density and processing gain tend to infinity with their ratio kept a constant. The limiting network consists of infinitely dense, sender uniformly distributed, mutually independent, and memoryless Gaussian channels that connect all pairs of sending and receiving nodes on the entire 2-D plane. The MMSE receiver, decorrelator, and MF are employed. The transport capacity, space time spectrum power efficiency, and packet delay are obtained in closed form as functions of entire network profile. With joint optimization of code rate allocation, MAC, and routing, the transport capacity and space time spectrum power efficiency are information-theoretical limits of the large wireless CDMA ad hoc networks. Keywords: Capacity, ad hoc networks.