these peak-reducing signals are built by using spreading codes that are either dynamically selected those users that are known to be idle, or deliberately reserved a priorifor PAPR reduction purposes. The concept of adding orthogonal signals for peak

清楚地阐述了OFDM的发展状况，以及工作原理，最重要的是详细的介绍了几种降低OFDM系统峰均比的技术-Clearly describes the development of OFDM, as well as works, the most important is the detailed descr iption of several OFDM systems reduce PAPR Technology

阐述了OFDM的发展状况，工作原理，重要的是详细的介绍了几种降低OFDM系统峰均比的技术-Clearly describes the development of OFDM, as well as works, the most important is the detailed descr iption of several OFDM systems reduce PAPR Technology

清楚的介绍了OFDM系统，并提出了几种比较实用的降低OFDM系统峰均比的技术-Clearly describes the OFDM system, and proposed several more practical OFDM systems reduce PAPR Technology