Performance analysis of M‐ary OQAM/FBMC with impact of nonlinear distortion over compound Rician K‐factor unshadowed/κ−μ shadowed fad ing channels

• Published in: IET communications Vol. 15; no. 1; pp. 60 - 77
• Main Author: Al‐Rubaye, Ghanim A.
• Format: Journal Article
• Language: English
• Published: Stevenage John Wiley & Sons, Inc 01.01.2021; Wiley
• Subjects: Bit error rate; Channels; Codes; Communication channels; Communications systems; Distortion; Error analysis; Error statistics (inc. error probability); Fading; Filter banks; Filtering methods in signal processing; Impact analysis; Modulation and coding methods; Monte Carlo methods; Numerical integration; Outages; Power amplifiers; Radio links and equipment; Random noise; Random variables; Reliability; Satellite communications; Visual perception
• ISSN: 1751-8628; 1751-8636
• DOI: 10.1049/cmu2.12059

In this paper, the bit error rate (BER) analyses of M‐ary offset QAM for filter bank‐based multicarrier (M‐ary OQAM/FBMC) contaminated by nonlinear distortion (NLD) are investigated over different channel scenarios, such as unshadowed line‐of‐sight (LOS) Rician K‐factor (RK‐f) fading channel, non‐line‐of‐sight (NLOS) κ−μ shadowed fading model and compound unshadowed/shadowed fading model. NLDs produced by high power amplifier (HPA) play the main role in the degradation of the BER in multicarrier communication systems over fading channels. Therefore, the complex Gaussian noise and the complex NLD are modelled as an independent parameter by using Bussgang's theorem. In this work, closed‐form of BER, ergodic capacity, outage probability and outage capacity probability expressions for the M‐ary OQAM/FBMC system over different unshadowed/shadowed fading channel scenarios and environments with amplitude (AM) and phase (PM) distortion induced by the HPA have been theoretically derived as general expressions without numerical integration method. Extensive Monte‐Carlo simulation results demonstrate a closed agreement with all analytical derived expressions.