DocumentCode :
3482652
Title :
Improvement of multiple antennas diversity systems through receiver nonlinear coupling cancellation
Author :
Arambasic, Igor ; Quiros, F.J.C. ; Raos, Ivana
Author_Institution :
Univ. Politecnica de Madrid, Madrid
fYear :
2007
fDate :
4-8 June 2007
Firstpage :
102
Lastpage :
106
Abstract :
In order to gain diversity and achieve high bit rates, the recent trends in mobile communication industry include the use of multiple antennas in transmitter and at the receiver. As the mobile terminals get smaller, the number of electronic elements inside of them rises and the electronic interferences, like RF coupling, emerge. In this contribution, the coupling is modeled with polynomials limited to third order nonlinear behavior. To combat the multi antenna RF front-end coupling the software module at the output of AD converter is proposed. Inside the module, signal enhancement is achieved based on the inverse nonlinear coupling function of the 9th degree. The inverse function is solved using simulated annealing (SA) approximation method. The proposed coupling cancellation algorithm is analyzed under different system conditions showing excellent coupling cancellation characteristics.
Keywords :
analogue-digital conversion; antenna arrays; approximation theory; diversity reception; interference suppression; mobile communication; radiofrequency interference; simulated annealing; AD converter; RF front-end coupling; electronic interferences; mobile communication; multiple antennas diversity systems; receiver nonlinear coupling cancellation; simulated annealing approximation method; Bit rate; Communication industry; Couplings; Mobile antennas; Mobile communication; Radio frequency; Radiofrequency interference; Receiving antennas; Transmitters; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Waveform Diversity and Design Conference, 2007. International
Conference_Location :
Pisa
Print_ISBN :
978-1-4244-1276-1
Electronic_ISBN :
978-1-4244-1276-1
Type :
conf
DOI :
10.1109/WDDC.2007.4339389
Filename :
4339389
Link To Document :
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