摘要
讨论了基于MB-OFDM方案的超宽带通信系统,在此方案中,整个可用频带被分为多个528MHz的子带,每个子带上采用OFDM技术传输信息,数据通过时频码在不同的子带上传输。主要介绍了频带划分,系统参数,实现结构等问题,同DS-CDMA方案进行了比较。最后展望了UWB无线通信的发展前景。
In this paper, a multi - band OFDM （MB - OFDM） system for ultra - wideband （UWB） communication is discussed. In this system, the UWB spectrum is divided into bands of 528 MHz width and the data is transmitted across the bands using a time - frequency code. Within each subband, an OFDM modulation scheme is used to transmit the information. Several problems including bandwidth allocation, system parameters, structure of implementation are introduced. This paper compared it with the DS - CDMA scheme. At last the prospect of UWB communication is also given.
出处
《信息技术》
2006年第12期125-127,188,共4页
Information Technology
