Title :
Performance of DQPSK communication systems impaired by mixer imbalance, timing error, and Rayleigh fading
Author :
Kiasaleh, Kamran ; He, Tao
Author_Institution :
Erik Jonsson Sch. of Eng. & Comput. Sci., Texas Univ., Dallas, TX, USA
Abstract :
The current North America Digital Cellular (NADC) standards suggest π/4-shifted-DQPSK as the modulation for the current digital mobile communications systems. The performance of differential quaternary-phase-shift-keying (DQPSK) receivers impaired by mixer imbalance and timing error is investigated. Expressions for the system bit error rate (BER) are obtained for channels free of fading and for frequency non-selective slow Rayleigh fading channels in the face of additive white Gaussian noise. To arrive at the desired expressions for the system BER, the conditional probability density function (PDF) of the phase angle between a pair of Gaussian random vectors is averaged over timing error and channel fading effects
Keywords :
Gaussian noise; Rayleigh channels; cellular radio; differential phase shift keying; digital radio; error statistics; fading; radio receivers; timing; white noise; DQPSK communication systems; DQPSK receivers; Gaussian random vectors; North America Digital Cellular standards; PDF; Rayleigh fading; additive white Gaussian noise; channel fading; conditional probability density function; differential quaternary-phase-shift-keying; digital mobile communications systems; frequency nonselective channels; mixer imbalance; phase angle; slow Rayleigh fading channels; system performance; timing error; Additive white noise; Bit error rate; Communication standards; Digital modulation; Fading; Frequency; Mobile communication; North America; Rayleigh channels; Timing;
Conference_Titel :
Communications, 1996. ICC '96, Conference Record, Converging Technologies for Tomorrow's Applications. 1996 IEEE International Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-3250-4
DOI :
10.1109/ICC.1996.542213
