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Haya H Al Muhannadi
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Low SNR Capacity for MIMO Rician and Rayleigh-Product Fading Channels with Single Co-channel Interferer and Noise

Author(s): Zhong, CJ (Zhong, Caijun); Jin, S (Jin, Shi); Wong, KK (Wong, Kai-Kit); Alouini, MS (Alouini, Mohamed-Slim); Ratnarajah, T (Ratnarajah, T.)

This paper studies the ergodic capacity of multiple-input multiple-output ( MIMO) systems with a single co-channel interferer in the low signal-to-noise-ratio (SNR) regime. Two MIMO models namely Rician and Rayleigh-product channels are investigated. Exact analytical expressions for the minimum energy per information bit, E-b/N-0min, and wideband slope, S-0, are derived for both channels. Our results show that the minimum energy per information bit is the same for both channels while their wideband slopes differ significantly. Further, the impact of the numbers of transmit and receive antennas, the Rician K factor, the channel mean matrix and the interference-to-noise-ratio (INR) on the capacity, is addressed. Results indicate that interference degrades the capacity by increasing the required minimum energy per information bit and reducing the wideband slope. Simulation results validate our analytical results.

Author(s):  Zhong, CJ (Zhong, Caijun); Jin, S (Jin, Shi); Wong, KK (Wong, Kai-Kit); Alouini, MS (Alouini, Mohamed-Slim); Ratnarajah, T (Ratnarajah, T.)
Addresses:  Zhong, Caijun; Ratnarajah, T.] Queens Univ Belfast, ECIT, Belfast BT3 9DT, Antrim, North Ireland; [Jin, Shi] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R China; [Wong, Kai-Kit] UCL, Dept Elect & Elect Engn, London WC1E 6BT, England; [Alouini, Mohamed-Slim] Abdullah Univ Sci & Technol KAUST, Thuwal, Mekkah Province, Saudi Arabia
Source:  IEEE TRANSACTIONS ON COMMUNICATIONS, 58 (9): 2549-2560 SEP 2010
DOI: 10.1109/TCOMM.2010.080310.090366
Publisher:  IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Funding Agency:  This work was supported in part by the Engineering and Physical Science Research Council (EPSRC), under Grant EP/G026092/1. The work of S. Jin was supported by National Natural Science Foundation of China under Grants 60902009 and 60925004, and National Science and Technology Major Project of China under Grants 2009ZX03003-005. The work of K. Wong was supported in part by the EPSRC by grant EP/D058716/1 and EP/E022308/1. The work of M. Alouini was supported in part by Qatar National Research Fund (QNRF). The work of T. Ratnarajah was supported by the Future and Emerging Technologies (FET) Programme within the Seventh Framework Programme for Research of the European Commission under FET-Open grant number CROWN-233843. This work was presented in part at 2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communication, Perugia, Italy, June, 2009
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