Performance Analysis of Fully Joint Diversity Combining, Adaptive Modulation, and Power Control Schemes

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Title: Performance Analysis of Fully Joint Diversity Combining, Adaptive Modulation, and Power Control Schemes
Author: Bouida, Zied
Abstract: Adaptive modulation and diversity combining represent very important adaptive solutions for future generations of wireless communication systems . Indeed , to improve the performance and the efficiency of these systems , these two techniques recently have been used jointly in new schemes named joint adaptive modulation and diversity combining (JAMDC ) schemes . Considering the problem of finding lowcomplexity , bandwidth -efficient , and processing -power efficient transmission schemes for a downlink scenario and capitalizing on some of these recently proposed JAMDC schemes , we propose and analyze three fully joint adaptive modulation , diversity combining , and power control (FJAMDC ) schemes . More specifically , the modulation constellation size , the number of combined diversity paths , and the needed power level are determined jointly to achieve the highest spectral efficiency with the lowest possible combining complexity , given the fading channel conditions and the required bit error rate (BER ) performance . The performance of these three FJAMDC schemes is analyzed in terms of their spectral efficiency , processing power consumption , and error -rate performance . Selected numerical examples show that these schemes considerably increase the spectral efficiency of the existing JAMDC schemes with a slight increase in the average number of combined paths for the low signal to noise ratio range while maintaining compliance with the BER performance and a low radiated power resulting in a substantial decrease in interference to co -existing systems /users .
URI: http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2009 -08 -7005
Date: 2010-01-14

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Performance Analysis of Fully Joint Diversity Combining, Adaptive Modulation, and Power Control Schemes. Available electronically from http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2009 -08 -7005 .

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