认知无线电网络基于MIMO的新型频谱共享算法

new MIMO beamforming based algorithm of precoding and two spectrum sharing algorithms in cognitive radio networks are proposed. By using the information of both the channel and the precoding vector and receiving vector of the primary system, this algorithm can carry out spectrum sharing under the condition that no idle spectrum resource is available. Compared with tradition joint spectrum sharing, two proposed algorithms could improve the system throughput greatly. In the two proposed algorithms, the CBS traversal algorithm could achieve optimal throughput with high complexity, while the random algorithm has suboptimal throughput with low complexity. In the end, all algotithms are extend to muti-user scenario.