Space Division Multiplexing Based Joint Spectrum Sharing in Cognitive Radio Networks
Liyuan Xiao · Beijing Youdian Xueyuan xuebao · 2011
A space division multiplexing based joint transmit-receive spectrum sharing method in cognitive radio networks is proposed.By exploiting spatial correlation features between cognitive transmission and interference among different systems,appropriate primary system and its channel could be selected under the condition that no idle spectrum resource is available.Consequently,the spectrum sharing is carried out using space division multiplexing.Compared with the method implemented only at cognitive base station and exhaustive searching,the proposed scheme could achieve near-optimal system throughput performance with reduced complexity.