Title :
Channel outage performance of QPSK and π/4-DQPSK in a multipath fading environment
Author :
Haines, R.J. ; Aghvami, A.H.
Author_Institution :
King´´s Coll., London Univ., UK
Abstract :
Channel outage probabilities for QPSK and π/4-DQPSK are evaluated in a Gaussian profiled multipath fading channel with additive white noise by computer simulation. Assuming a minimum acceptable bit error rate of 10-5, it is found that even with a very small normalised delay spread d´=0.05, the channel outage probability is greater than 10-3. Using 4-branch switched diversity this can be reduced such that channel outage is less than 10-5 with d´<0.2 (QPSK) or 0.13 (π/4-DQPSK)
Keywords :
digital radio systems; diversity reception; fading; mobile radio systems; phase shift keying; telecommunication channels; white noise; π/4-DQPSK; 4-branch switched diversity; AWGN channel; Gaussian profiled multipath fading channel; QPSK; additive white Gaussian noise; bit error rate; channel outage probability; computer simulation; indoor radio channel; normalised delay spread; Bit error rate; Convolution; Delay; Error analysis; Fading; Filters; Indoor environments; Quadrature phase shift keying; Shape; Signal to noise ratio;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1992. Proceedings, PIMRC '92., Third IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-0841-7
DOI :
10.1109/PIMRC.1992.279881
