Performance of Optimal Combining versus Maximal RatioCombining: MIMO - Antenna Diversity performance comparison; OC or MRC in terms of Bit Error Rate & Carrier to interference noise ratio

In this work, for a CDMA communication, the per user carrier-to-interference ratio (CINR) enhancement in the Reverse Link (mobile to base station) is analyzed using different antenna array spatial combining algorithms: Optimal Combining (OC) Versus Maximal Ratio Combining (MRC) in a multi-rate (combined voice and data users) multi-antenna scenario. The ratio of the CINR for OC vs. MRC is directly analyzed, i.e. Z=CINROC/CINRMRC. Exact solutions are derived for the statistics of a per user CINROC/CINRMRC improvement, as a function of the high-level interference power to background noise, the gain ratio CINROC/CINRMRC is evaluated in a flat Rayleigh fading communications system with multiple interferers, when the number of interferences L is no less than the number of antenna elements M (L M). The gain ratio is derived providing a simple means to determine when OC will exhibit significant gains over MRC. simulations are done to find out the BER performance of optimum combining diversity in correlated Nakagami-m channels and compare with the BER performance of MRC and the influence of interference for MRC and OC are analyzed and discussed

Product details

• Authors: Alta Ahmed, Altaf Ahmed, Amanpree Kaur, Amanpreet Kaur, Rajesh Khanna
• Publisher: LAP Lambert Academic Publishing
• Languages: English
• Product format: Paperback / Softback
• Released: 25.05.2012
• EAN: 9783846549162
• ISBN: 978-3-8465-4916-2
• No. of pages: 100
• Subjects: Guides; Natural sciences, medicine, IT, technology > IT, data processing > Miscellaneous