NDLI: Performance improvement analysis of wireless MIMO channel in the presence of keyhole

Content Provider	IEEE Xplore Digital Library
Author	Mostafa, M.G. Karim, M.M. Azam, M.Z. Rahman, Z. Bari, S. Majumder, S.P.
Copyright Year	2013
Description	Author affiliation: Dept. of EECE, Mil. Inst. of Sci. & Technol. (MIST), Bangladesh (Karim, M.M.; Azam, M.Z.; Rahman, Z.; Bari, S.) \|\| Dept. of EEE, Bangladesh Univ. of Eng. & Technol. (BUET), Dhaka, Bangladesh (Mostafa, M.G.; Majumder, S.P.)
Abstract	Wireless communication systems always demand higher data rates and better quality of service (QoS). Transmission reliability in a wireless channel with high path loss, time-varying multipath fading and power and bandwidth limitations, is a testing issue. Multiple-input multiple-output (MIMO) systems can reduce the effect of these channel interferences and achieve reliable signal transmission at high data rate. Space-time block code (STBC) is a coding scheme for the use of multiple transmits antennas providing a simple transmit diversity scheme. In certain MIMO fading environments, the offered channel capacity can be very low, where despite rich local scattering and uncorrelated transmit and receive signals, the system has a single degree of freedom. This effect has been termed as keyhole or pinhole effect. This contribution analyzes the average symbol error rate (SER) performance of MIMO systems employing orthogonal STBC with M-PSK constellations over fading channels in the presence of the keyhole. The Nakagami-m distribution has been considered for MIMO channel modeling. We derive the probability density function (PDF) of instantaneous signal-to-noise ratio (SNR) and an integral equation to calculate the average SER after space-time block decoding in such channels. Numerical results show that the keyhole significantly degrades the SER performance of the STBC in MIMO channels. The performance of such channels is a function of fading figure, m and diversity.
Starting Page	906
Ending Page	911
File Size	1662061
Page Count	6
File Format	PDF
ISBN	9781467331487
ISSN	17389445
e-ISBN	9788996865018
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-27
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	GIRI
Subject Keyword	MIMO Bandwidth Channel models Fading Legged locomotion Signal to noise ratio symbol error rate Keyhole multiple-input multiple-output system Nakagami-m fading space-time block codes
Content Type	Text
Resource Type	Article

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