DocumentCode :
425795
Title :
Phase distribution characteristics in mobile radio channels - phase difference between symbol intervals and adjacent channels
Author :
Kozono, Shigem ; Wang, Rui
Author_Institution :
Dept. of Electron., Chiba Inst. of Technol., Narashino, Japan
Volume :
1
fYear :
2004
fDate :
17-19 May 2004
Firstpage :
152
Abstract :
We evaluate the phase difference distribution with and without diversity in multipath propagation by computer simulation, and find some parts theoretically. The distribution is discussed from two points of view in the time and frequency domains. In the time domain, (a) probability and cumulative density functions are derived, (b) the distribution depends on the product of fading frequency, fm, and symbol interval, Ts, (c) the cumulative value of beyond plus and minus π/4 in phase difference, p(|x|>π/4), is calculated. In the frequency domain, (a) the distribution depends on the product of subchannel bandwidth, f0, and excess delay time, τi, (b) the phase difference at a cumulative value of 50% is <2πf0τi>, and is zero off, (c) the cumulative value of p(|x|>π/4) is also calculated. Furthermore, the distribution with thermal noise is simulated. As an example of the application of the distribution, we estimate the BER of DQPSK by using the distribution, and this agrees well with the theoretical value.
Keywords :
4G mobile communication; differential phase shift keying; diversity reception; error statistics; frequency-domain analysis; mobile radio; multipath channels; quadrature phase shift keying; radiowave propagation; statistical distributions; thermal noise; time-domain analysis; BER estimation; DQPSK; adjacent channels; cumulative density function; excess delay time; fourth-generation mobile communications; frequency domain; mobile radio channels; multipath propagation; phase difference distribution; probability density function; subchannel bandwidth; symbol interval; symbol intervals; thermal noise; time domain; Amplitude modulation; Bit error rate; Fading; Frequency domain analysis; Intersymbol interference; Mobile communication; OFDM; Phase modulation; Propagation delay; Quadrature amplitude modulation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th
ISSN :
1550-2252
Print_ISBN :
0-7803-8255-2
Type :
conf
DOI :
10.1109/VETECS.2004.1387931
Filename :
1387931
Link To Document :
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