The Resource-Optimized Differentially Modulated Hybrid AF/DF Cooperative Cellular Uplink

—In multi-user cellular uplinks cooperating mobiles may share their antennas in order to achieve transmit diversity by formig a virtual antenna array (VAA) in a distributed fashion. In this paper, based on the minimum BER criterion, we investigate cooperating-userselection (CUS) and adaptive-power-allocation (APA) for two types of differentially modulated cooperative cellular uplinks requiring no channel state information (CSI) at the receiver, namely, for the differentialamplify-and-forward (DAF) and the selective differential-decode-andforward (DDF) assisted systems. More specifically, we investigate the cooperative-protocol-selection (CPS) of the uplink system in conjunction with a beneficial CUS as well as the APA scheme in order to further improve the achievable end-to-end performance, leading to a resourceoptimized hybrid cooperative system. Hence, a number of cooperating MSs may be adaptively selected from the available MS candidate pool and the cooperative protocol employed...

• Type: Conference
• Year: 2009
• Where: GLOBECOM
• Authors: Li Wang, Lajos Hanzo
• Keywords: Cellular Uplinks, Cooperative Cellular Uplinks, GLOBECOM 2009, Telecommunications , Uplinks Cooperating Mobiles