Title :
Field test measurement for 128 kbit/s QPSK signal transmission and delay time spread in 1.5 GHz-band land mobile radio
Author :
Furuno, Tatsuo ; Ogose, Shigeaki
Author_Institution :
NTT Radio Commun. Syst. Labs., Kanagawa, Japan
fDate :
6/7/1990 12:00:00 AM
Abstract :
High-speed digital signal transmission is a promising new field of communication services. In land mobile radio communication, transmission quality severely suffers from frequency selective fading under multipath radiowave transmission environments. Field test measurement results for 128 kbit/s QPSK signal transmission and delay time spread in the Tokyo metropolitan area are presented. The two-branch diversity reception method was adopted to combat fading. Bit error rate (BER) performance is obtained as a function of delay time spread.
Keywords :
delays; digital radio systems; diversity reception; error statistics; fading; microwave links; mobile radio systems; phase shift keying; radio reception; radiowave propagation; 1.5 GHz; 128 kbit/s; BER performance; QPSK signal transmission; Tokyo metropolitan area; UHF; bit error rate; delay time spread; field test measurement; frequency selective fading; high speed digital communications; land mobile radio; multipath radiowave transmission environments; transmission quality; two-branch diversity reception method;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900515
