Title :
QDPSK signal transmission performance with postdetection selection diversity reception in land mobile radio
Author :
Ohno, Koji ; Adachi, Fumiyuki
Author_Institution :
NTT Radio Commun. Syst. Lab., Kanagawa, Japan
fDate :
11/1/1991 12:00:00 AM
Abstract :
The bit error rate (BER) performance of 16-128 kb/s Nyquist raised-cosine filtered quaternary differential phase-shift keying (RC-QDPSK) signal transmission was experimentally investigated. Two-branch postdetection selection diversity reception was employed. Measured results are presented for the BER performance due to additive white Gaussian noise (AWGN), cochannel interference, and multipath channel delay spread. Field BER measurements were also conducted at a carrier frequency of 1.45 GHz in an area characterized by high-rise buildings and in an area surrounded by mountains. The results show that postdetection selection diversity is a simple yet powerful technique to improve the BER performance in fading mobile radio channels
Keywords :
digital radio systems; diversity reception; fading; mobile radio systems; phase shift keying; 1.45 GHz; 16 to 128 kbit/s; AWGN; BER; Nyquist raised cosine filtered signals; QDPSK signal transmission performance; RC-QDPSK; additive white Gaussian noise; bit error rate; cochannel interference; fading mobile radio channels; land mobile radio; multipath channel delay spread; postdetection selection diversity reception; quaternary differential phase-shift keying; AWGN; Additive white noise; Area measurement; Bit error rate; Delay; Differential phase shift keying; Diversity reception; Interchannel interference; Multipath channels; Noise measurement;
Journal_Title :
Vehicular Technology, IEEE Transactions on
