Sunday 19th of November 2017
 

Performance Analysis of ST,SF and STF IN MIMO-OFDM Technique


M.Vijaya Laxmi and S.Narayana Reddy

In this paper with the advent of next generation (4G) broadband wireless communications, the combination of multiple-input multiple-output (MIMO) wireless technology with orthogonal frequency division multiplexing (OFDM) has been recognized as one of the most promising techniques to support high data rate and high performance. In particular, coding over the space, time, and frequency domains provided by MIMO-OFDM will enable a much more reliable and robust transmission over the harsh wireless environment. In this article we provide an overview of space-time (ST) coding, space-frequency (SF) coding, and space-time-frequency (STF) coding for MIMO-OFDM systems. Performance results show that STF coding can achieve the maximum diversity gain in an end to- end MIMO-OFDM system over broadband wireless channels. Furthermore, for orthogonal frequency division multiple access (OFDMA),we propose a multiuser SF coding scheme that can achieve the maximum diversity for each user while minimizing the interference introduced from all the other users.

Keywords: Space Time, Space Frequency, Space Time Frequency coding

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ABOUT THE AUTHORS

M.Vijaya Laxmi
RESEARCH SCHOLAR(PART TIME) JNT UNIVERSITY, HYDERABAD WORKING AS ASSOCIATE PROFESSOR DEPARTMENT OF ECE SRI KALAHASTEESWARA INSTITUTE OF TECHNOLOGY(SKIT) SRIKALAHASTI

S.Narayana Reddy
PROFESSOR AND HEAD DEPARTMENT OF ECE SVU COLLEGE OF ENGINEERING, SV UNIVERSITY TIRUPATI


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