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   improvement of channel estimation in mimo-ofdm using improved ls algorithm on multipath channels  
   
نویسنده daryasafar navid ,borazjani omid
منبع majlesi journal of electrical engineering - 2016 - دوره : 10 - شماره : 3 - صفحه:39 -45
چکیده    in high capacity systems, as the bit transmission rate increases, inter symbol interference (isi) caused by themulti-path channel reduces the system efficiency. orthogonal frequency division multiplexing (ofdm)technique acts very well against this phenomenon. moreover, an accurate estimation of the communicationchannel coefficients improves the performance of communication systems effectively. in this paper, for multipleinput multiple output(mimo) systems using ofdm technique that is based on the least squares (ls) algorithm,an improved channel estimation algorithm is presented. accordingly, investigating the channel estimationmethod, we can design optimum training courses for these systems based on ls algorithm. simulation shows theefficiency of suggested ls algorithm. we also provided the results of the communication channel estimation.
کلیدواژه multiple input multiple output (mimo) systems ,least squares (ls) algorithm ,enhanced least squares(els) algorithm ,improved least squares(ils) algorithm
آدرس islamic azad university, dashtestan branch, faculty of electrical engineering, iran, islamic azad university, dashtestan branch, faculty of electrical engineering, iran
پست الکترونیکی omidborazjani@yahoo.com
 
 

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