通过介绍认知无线技术，让大家掌握基于CR的OFDM通信系统的搭建-failed to translate

Spectral Efficiency Analysis in OFDM and OFDM/OQAM based Cognitive Radio Networks The future wireless communication is expected to be able to improve the efficiency of spectrum usage. To solve the challenge of spectrum shortage, an innovativ

we study the resource allocation problem for the multiuser orthogonal frequency division multiplexing (OFDM)-based cognitive radio (CR) systems with proportional rate constraints.