认知无线电可以通过动态频谱接入技术来有效的提高频谱的利用率，而在动态频谱接入中信道选择策略的优劣直接影响着系统的性能。
Cognitive radio can effectively improve the utilization of spectrum through dynamic spectrum access technology, in which the channel selection affects directly the performance of the system.
通过FEC、有选择重发的滞后确认和动态信道变化，信道的吞吐量得到大大改进。
Channel throughput is improved through FEC, delayed acknowledgements with selective retransmissions and dynamic channel change.
应用推荐