中文说明：资源描述认知无线电已经成为一个最有前途的候选解决方案，以提高频谱利用率在下一代蜂窝网络。未来认知无线电网络的一个关键要求是宽带频谱感知：二级用户可靠地检测到频谱机会，在很宽的频率范围。在这个代码中，各种宽带频谱感知算法，连同每一个算法的优点和缺点，并讨论了具有挑战性的问题。特别注意的是，亚奈奎斯特技术的使用，包括压缩传感多路亚奈奎斯特采样技术。
English Description：
Application backgroundCognitive radio has emerged as one of the most promising candidate solutions to improve spectrum utilization in next generation cellular networks. A crucial requirement for future cognitive radio networks is wideband spectrum sensing: secondary users reliably detect spectral opportunities across a wide frequency range. In this code, various wideband spectrum sensing algorithms are presented, together with a discussion of the pros and cons of each algorithm and the challenging issues. Special attention is paid to the use of sub-Nyquist techniques, including compressive sensing and multichannel sub- Nyquist sampling techniques.