Title :
Outage probability for a frequency-selective fading digital portable radio channel with selection diversity using coding
Author :
Chang, Li Fung ; Chuang, Justin C I
Author_Institution :
Bellcore, Red Bank, NJ, USA
Abstract :
The outage probability for a time division multiple access (TDMA) portable radio channel with diversity selection based on coding is obtained by using computer simulation. Coherent detection of a quaternary phase shift keying (QPSK) signal with spectrally raised-cosine Nyquist pulse with 0.5 roll-off factor is used as an example. Different performance criteria are used to define outage. The outage probability as a function of the normalized RMS time delay spread is then used to determine the maximum transmission rate than can be supported by a portable radio channel. It is found that for a performance objective of 1% or less outage, a transmission rate of several hundred kb/s is possible. The use of two-branch selection diversity can increase the channel capacity by about a factor of 3 or more
Keywords :
digital radio systems; diversity reception; encoding; fading; mobile radio systems; probability; telecommunication channels; time division multiple access; QPSK signal; TDMA; channel capacity; coding; computer simulation; digital portable radio channel; frequency-selective fading; maximum transmission rate; normalized RMS time delay spread; outage probability; quaternary phase shift keying; roll-off factor; selection diversity; spectrally raised-cosine Nyquist pulse; time division multiple access; Bit error rate; Channel capacity; Computer simulation; Delay effects; Error correction; Fading; Frequency diversity; Quadrature phase shift keying; Springs; Time division multiple access;
Conference_Titel :
Communications, 1989. ICC '89, BOSTONICC/89. Conference record. 'World Prosperity Through Communications', IEEE International Conference on
Conference_Location :
Boston, MA
DOI :
10.1109/ICC.1989.49689
