Title :
Multiple-symbol differential detection of DQPSK and DPSK mobile communication systems impaired by oscillator phase noise
Author :
Kiasaleh, Kamran
Author_Institution :
Erik Jonsson Sch. of Eng. & Comput. Sci., Texas Univ., Dallas, TX, USA
Abstract :
A multiple-symbol differential detection (MSDD) scheme is proposed for the detection of binary differential-phase-shift-keying (DPSK) and DQPSK signals in the presence of additive white Gaussian noise (AWGN) and weak oscillator phase noise. An algorithm that is computationally more efficient than that suggested by the maximum-likelihood sequence estimation (MLSE), and referred to as CE-MSDD, is proposed. The performance of the CE-MSDD receiver is assessed in terms of symbol or bit error rate (BER) for various levels of full-width-at-half-maximum (FWHM) linewidth of the noisy oscillator using the Monte-Carlo (MC) simulation technique. The simulation results clearly underscore the superiority of the proposed schemes over their 2-symbol counterparts in the presence of phase noise
Keywords :
Gaussian noise; Monte Carlo methods; demodulation; differential phase shift keying; digital simulation; land mobile radio; phase noise; quadrature phase shift keying; radio receivers; radiofrequency oscillators; signal detection; white noise; AWGN; BER; CE-MSDD receiver perfomance; DPSK signals; DQPSK signals; MLSE; Monte-Carlo simulation; additive white Gaussian noise; binary differential-phase-shift-keying; bit error rate; full-width-at-half-maximum linewidth; maximum-likelihood sequence estimation; mobile communication systems; multiple-symbol differential detection; noisy oscillator; oscillator phase noise; simulation results; symbol error rate; AWGN; Additive white noise; Bit error rate; Differential quadrature phase shift keying; Gaussian noise; Maximum likelihood detection; Maximum likelihood estimation; Oscillators; Phase detection; Phase noise;
Conference_Titel :
Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-4198-8
DOI :
10.1109/GLOCOM.1997.644328
