Performance Analysis of MRC/EGC Antenna Diversity for M-QAM Systems over Ricean Fading Channels with PSAM-Based LMMSE Channel Estimation

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Thesis Type: Postgraduate

Institution Of The Thesis: Gazi University, Fen Bilimleri Enstitüsü, Turkey

Approval Date: 2010

Thesis Language: Turkish

Student: Jawad Ali Abbas Alhaydary

Supervisor: Özgür Ertuğ

Open Archive Collection: AVESIS Open Access Collection

Abstract:

In this thesis, the effect of imperfect channel estimation (ICE) on maximal-ratio combining (MRC) and equal-gain combining (EGC) in receive antenna diversity systems with M-level quadrature amplitude modulation (M-QAM) are examined. The channel is assumed to be spatially-independent frequency-flat with Ricean fading and AWGN. Average BERs and outage probability of MRC and EGC antenna diversity combining schemes are analyzed via Monte-Carlo simulations versus average received bit SNR per antenna and specified outage threshold 𝜸𝒕𝒉 respectively for various values of Ricean K-factor, number of antennas L and normalized channel estimation correlation coefficient 𝝆 to show the actual diversity gain with these combining schemes under realistic LMMSE-based channel estimation scenarios for pilot-symbol aided modulation (PSAM).