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                            Library & Multimedia
 Reduced Overhead Training for Multi Reconfigurable Antennas With Beam-Tilting Capability
NCJ Number
              249136
Journal

*IEEE Trans. on Wireless Communications* Volume: 9 Issue: 12 Dated: December 2010 Pages: 3810-3821
Author(s)
          H. Elsami;
                        C. P. Sukumar;
                        D. Rodrigo;
                        S. Mopidevi;
                        A. M. Eltawil;
                        L. Jofre;
                        B. A. Cetiner
Date Published

December 2010
Length
              12 pages
Annotation
              This paper presents a design for a microelectromechanical system (MEMS) Multifunctional Reconfigurable Antenna (MRA) capable of tilting its beam in eight directions, along with three new training schemes for mode selection and channel estimation.
Abstract
              Their associated overhead performance and resilience to Channel State Information (CSI) quality degradation are reported. For environments where angles of arrival (AoAs) change relatively slowly, it was found that exhaustive training (ET) was wasteful and that model selection at a reduced rate lessened the training overhead, resulting in an increased system capacity and an impact on bit error rate (BER). On the other hand, for environments in which the AoAs change relatively quickly, a tracking scheme was developed to reduce the impact of imperfect mode selection and channel estimation. Also, the proportion of contribution to system performance from antenna directivity and channel diversity/rank was quantified. Channel diversity/rank was found to have a higher impact on system performance than antenna directivity. In addition, the performance of a random mode selection scheme was studied and analyzed. The random selection algorithm was found to perform just as well as other training schemes in capacity analysis, but it had poor BER performance. 13 figures and 25 references
      
  
          Additional Details
Grant Number(s)
        2007-IJ-CX-K025
                                2009-SQ-B9-K005
                                2006-IJ-CX-K044


  
  
        
  Agencies
        NIJ


  
  
        
  Publication Type
        Report (Technical)
                                Report (Study/Research)
                                Report (Grant Sponsored)


  
  
        
  Award
        Agile, Multi Antenna Capable SDR Platform for Advanced Public Safety Communications
                                NEMS Integrated Reconfigurable Antenna operating at 150, 400, 700, 800, and 4900 MHz bands for Interoperable Public Safety Communications
                                MEMS Integrated MRA for Use in Multi-functional MRA System
    
  
  
Date Published: December 1, 2010
    
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