The Progress of Research on Signals and Systems in China of Year 1998~2001
Lu Liu, Zhihua Wang, I. Wideband Cdma · 2001
Signals and systems is an important aspect of radio science. The recent progress of the research activities of signals and systems in China is reviewed in this paper. It covers the most advanced and important developments during years of 1998~2001. The review is based on the following categories: wideband CDMA, software radio, digital audio broadcasting technologies, information processing, radar target recognition, electronics design automation, integrated circuit design. I. WIDEBAND CDMA Mobile communications services are penetrating our society at an explosive rate. CDMA, especially wideband CDMA, has received growing attention in recent years, especially in multiuser detection, smart antennas, spreading codes design and channel coding. In [1], a new blind adaptive multiuser detector for synchronous DS/CDMA systems based on a low computational complexity high order statistics-based least mean kurtosis algorithm is presented by Tang, Zuqiang from Tsinghua University. In general, most of applications are used in the base station receiver due to complexity; less work has been done in the mobile terminal. In [2], a MAI cancellation detector is proposed at the mobile station receiver. Yong, Z from Tsinghua University discussed a smart antenna receiver capable of interference suppression [3]. He also investigated the capacity improvement with base-station antenna array [4]. In [5], a new set of spreading codes is designed which have low crosscorrelation around the origin. The performance was evaluated according to the criteria of