Two-hop relaying in CDMA networks using the unlicensed bands

Recently there has been significant interest in augmenting the conventional cellular networks with the multihop capability to obtain better high data rate performance in the context of enhanced-3G and beyond-3G networks.;This thesis deals with the power allocation strategies in the reverse-link of two-hop multimedia CDMA networks. In this envisioned network, the WTs (Wireless Terminals—portable devices used to transmit and/or receive electronic information via an air interface(s)) which cannot establish a direct link with the BS (at the required rates) seek the assistance of those WTs which can; in other words, whenever needed, some WTs are used as relayers for some other WTs (relayers) if this is possible.;The performance of any CDMA network depends on the implementation of a good power allocation and control scheme. The main contribution of this thesis is the development of a good power allocation scheme (which is tied to the proper selection of relayers) in the first hop. (Abstract shortened by UMI.).