Performance of Circular QAM Constellations with Time Varying Phase Noise
Paper in proceeding, 2012
Time varying phase noise is a limiting factor in high-speed wireless communication systems, e.g., microwave backhaul links in cellular networks. This paper seeks to investigate the performance of circular M-ary quadrature amplitude modulations (M-QAMs) in the presence of time varying phase noise. A new approximate union bound expression for the symbol-error probability (SEP) of a specific circular M-QAM constellation is derived. Numerical results show that this expression is accurate at medium-to-high signal-to-noise ratios (SNRs) for different constellation orders, M. Next, exact closed-form expressions for the SEP of binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK) modulations in the presence of phase noise are derived. Extensive simulations are carried out to compare the performance of rectangular and circular QAM modulations in the presence of time varying phase noise, where it is demonstrated that circular QAM modulations can outperform their rectangular counterparts when considering the effect of time varying phase noise.
Author
Muhammad Assad Tariq
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Hani Mehrpouyan
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Tommy Svensson
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
2365-2370 6362752
978-146732569-1 (ISBN)
Areas of Advance
Information and Communication Technology
Subject Categories
Telecommunications
Electrical Engineering, Electronic Engineering, Information Engineering
Signal Processing
DOI
10.1109/PIMRC.2012.6362752
ISBN
978-146732569-1