Search results for: MISO

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<meta name="description" content="Search results for: MISO"> <meta name="keywords" content="MISO"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" 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class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="MISO"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 3</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: MISO</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3</span> Convex Restrictions for Outage Constrained MU-MISO Downlink under Imperfect Channel State Information</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Preetha%20Priyadharshini">A. Preetha Priyadharshini</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20B.%20M.%20Priya"> S. B. M. Priya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we consider the MU-MISO downlink scenario, under imperfect channel state information (CSI). The main issue in imperfect CSI is to keep the probability of each user achievable outage rate below the given threshold level. Such a rate outage constraints present significant and analytical challenges. There are many probabilistic methods are used to minimize the transmit optimization problem under imperfect CSI. Here, decomposition based large deviation inequality and Bernstein type inequality convex restriction methods are used to perform the optimization problem under imperfect CSI. These methods are used for achieving improved output quality and lower complexity. They provide a safe tractable approximation of the original rate outage constraints. Based on these method implementations, performance has been evaluated in the terms of feasible rate and average transmission power. The simulation results are shown that all the two methods offer significantly improved outage quality and lower computational complexity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=imperfect%20channel%20state%20information" title="imperfect channel state information">imperfect channel state information</a>, <a href="https://publications.waset.org/abstracts/search?q=outage%20probability" title=" outage probability"> outage probability</a>, <a href="https://publications.waset.org/abstracts/search?q=multiuser-%20multi%20input%20single%20output" title=" multiuser- multi input single output"> multiuser- multi input single output</a>, <a href="https://publications.waset.org/abstracts/search?q=channel%20state%20information" title=" channel state information"> channel state information</a> </p> <a href="https://publications.waset.org/abstracts/48521/convex-restrictions-for-outage-constrained-mu-miso-downlink-under-imperfect-channel-state-information" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48521.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">813</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2</span> BER of the Leaky Feeder under Rayleigh Fading Multichannel Reception with Imperfect Phase Estimation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hasan%20Farahneh">Hasan Farahneh</a>, <a href="https://publications.waset.org/abstracts/search?q=Xavier%20Fernando"> Xavier Fernando</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Leaky Feeder (LF) has been a proven technology for many decades and its promises broadband wireless access in short range but being overlooked until now. The LF is a natural MIMO transceiver ideal for micro and pico cells. In this work, the LF is considered as a linear antenna array MultiInput-Single-Output (MISO) and derive the average bit error rate (BER) in Rayleigh fading channel considering ideal and independent paths (iid) which consider there is no correlation and mutual coupling between transmit antennas (slots) or receiver antenna considering QPSK modulation with imperfect phase estimation. We consider maximal ratio transmission (MRT) at the transmit end and maximal ratio combining (MRC) at the receiving end. Analytical expressions are derived for the BER with radiating cable transmitters. The effects of slot spacing and carrier frequency on the BER are also studied. Numerical evaluations show the radiating cable transmitter offer much lower BER than a single antenna transmitter with same SNR. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=leaky%20feeder" title="leaky feeder">leaky feeder</a>, <a href="https://publications.waset.org/abstracts/search?q=BER" title=" BER"> BER</a>, <a href="https://publications.waset.org/abstracts/search?q=QPSK" title=" QPSK"> QPSK</a>, <a href="https://publications.waset.org/abstracts/search?q=rayleigh%20fading" title=" rayleigh fading"> rayleigh fading</a>, <a href="https://publications.waset.org/abstracts/search?q=channel%20gain" title=" channel gain"> channel gain</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20mismatch" title=" phase mismatch"> phase mismatch</a> </p> <a href="https://publications.waset.org/abstracts/50123/ber-of-the-leaky-feeder-under-rayleigh-fading-multichannel-reception-with-imperfect-phase-estimation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50123.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">381</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1</span> Bit Error Rate Performance of MIMO Systems for Wireless Communications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.%20Ghayoula">E. Ghayoula</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Haj%20Taieb"> M. Haj Taieb</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Bouallegue"> A. Bouallegue</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Y.%20Chouinard"> J. Y. Chouinard</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Ghayoula"> R. Ghayoula</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper evaluates the bit error rate (BER) performance of MIMO systems for wireless communication. MIMO uses multiple transmitting antennas, multiple receiving antennas and the space-time block codes to provide diversity. MIMO transmits signal encoded by space-time block (STBC) encoder through different transmitting antennas. These signals arrive at the receiver at slightly different times. Spatially separated multiple receiving antennas are employed to provide diversity reception to combat the effect of fading in the channel. This paper presents a detailed study of diversity coding for MIMO systems. STBC techniques are implemented and simulation results in terms of the BER performance with varying number of MIMO transmitting and receiving antennas are presented. Our results show how increasing the number of both transmit and receive antenna improves system performance and reduces the bit error rate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=MIMO%20systems" title="MIMO systems">MIMO systems</a>, <a href="https://publications.waset.org/abstracts/search?q=diversity" title=" diversity"> diversity</a>, <a href="https://publications.waset.org/abstracts/search?q=BER" title=" BER"> BER</a>, <a href="https://publications.waset.org/abstracts/search?q=MRRC" title=" MRRC"> MRRC</a>, <a href="https://publications.waset.org/abstracts/search?q=SIMO" title=" SIMO"> SIMO</a>, <a href="https://publications.waset.org/abstracts/search?q=MISO" title=" MISO"> MISO</a>, <a href="https://publications.waset.org/abstracts/search?q=STBC" title=" STBC"> STBC</a>, <a href="https://publications.waset.org/abstracts/search?q=alamouti" title=" alamouti"> alamouti</a>, <a href="https://publications.waset.org/abstracts/search?q=SNR" title=" SNR"> SNR</a> </p> <a href="https://publications.waset.org/abstracts/23654/bit-error-rate-performance-of-mimo-systems-for-wireless-communications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23654.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">490</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" 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Search results for: MISO