Throughput Analysis of Peer-to-Peer UWB Asynchronous CDMA Networks

Ultra-wideband (UWB) radio is an emerging wireless physical layer technology which is considered the candidate for high data rate transmission or medium/low data rate asynchronous code-division multiple-access (CDMA) ad hoc networks thanks to its huge process gain (PG). On the other hand, UWB systems suffer long acquisition time (AT) led by the large bandwidth which induces a significant overhead. Hence, it is very important to understand the impact of both the huge PG and the long AT on network performance for designing efficient UWB networks. In this paper, we study the throughput performance of a peer-to-peer asynchronous CDMA network supported by a full duplex UWB physical layer taking into account above two distinct UWB features. Numerical results show that fast acquisition, multi-packet reception and network cooperation are necessary to improve the throughput of UWB asynchronous CDMA ad hoc networks.