Title :
Spectral efficiency improvement techniques for nonlinearly amplified mobile radio systems
Author :
Wang, Jing ; Feher, Kamilo
Author_Institution :
Dept. of Radio & Electron., Tsinghua Univ., Beijing, China
Abstract :
A study is reported of ´double-jump´ Nyquist channel filters which lead to reduced spectral spreading and an important bit error rate (BER) performance in nonlinearly amplified (NLA) mobile radio systems. In linearly amplified systems the filter retains the intersymbol-interference free properties of Nyquist filters and has the advantage of lower overshoot than the conventional raised cosine (RCS) filters. This reduced overshoot power (ROP) filter leads to a 1 dB system gain over conventional RCS filtered 16-QAM systems in NLA channels
Keywords :
digital communication systems; mobile radio systems; radiofrequency filters; 16-QAM systems; Nyquist channel filters; bit error rate; double jump channel filters; mobile radio systems; nonlinearly amplified systems; reduced overshoot power filter; spectral efficiency improvement; spectral spreading; Bandwidth; Bit error rate; Digital filters; Frequency; IIR filters; Land mobile radio; Power filters; Shape; Signal restoration; Transfer functions;
Conference_Titel :
Vehicular Technology Conference, 1988, IEEE 38th
Conference_Location :
Philadelphia, PA
DOI :
10.1109/VETEC.1988.195429
