By a News Reporter-Staff News Editor at Telecommunications Weekly -- New research on Telecommunications is the subject of a report. According to news reporting from Jiangsu, People's Republic of China, by VerticalNews journalists, research stated, "This paper focuses on the downlink dual-hop multiple-input multiple-output (MIMO) amplify-and-forward (AF) relay systems that employ the maximal-ratio transmission and receive antenna selection scheme (MRT&RAS) for use in each hop. The system under consideration is equipped with arbitrary N-S, N-R, and N-D antennas at the base station (BS), relay station (RS), and mobile station (MS), respectively."
The news correspondents obtained a quote from the research from the PLA University of Science and Technology, "The system performance has been investigated over Nakagami-m fading in presence of independent but not necessarily identically distributed co-channel interferences (CCIs) at both the RS and MS. First, we derive an accurate closed-form approximate expression for the outage probability and a single-integral expression for the average symbol error rate (SER), respectively. Besides, to render direct insights into the combined effect of multiple-antenna and interference on the system performance, the asymptotic expressions for the outage probability and the average SER are also presented. Furthermore, we determine the optimal power allocation (OPA) by using the exact and asymptotic methods, respectively, such that the outage probability is minimized. Finally, numerical results validate the correctness of the derived expressions and show that OPA offers superior performance over uniform power allocation."
According to the news reporters, the research concluded: "Our analysis and results provide insights on investigating and optimizing the performance of the downlink MIMO relay transmission in practical interference-limited wireless networks."
For more information on this research see: Performance Analysis of Dual-hop MIMO Relay Systems with MRT&RAS in the Presence of Co-channel Interference. Frequenz, 2013;67(9-10):283-292. Frequenz can be contacted at: Walter De Gruyter Gmbh, Genthiner Strasse 13, D-10785 Berlin, Germany.
Our news journalists report that additional information may be obtained by contacting X.M. Xu, PLA Univ Sci & Technol, Inst Commun Engn, Nanjing 210007, Jiangsu, People's Republic of China. Additional authors for this research include Y.M. Cai and W.W. Yang.
Keywords for this news article include: Asia, Jiangsu, Telecommunications, People's Republic of China
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