Mımo Ağlarında Uzamsal Kipleme ve Anten Seçimi Yöntemlerinin Karşılaştırılması

Abstract

An emerging concept in multiple input multiple output (MIMO) wireless communicationsis spatial modulation (SM), where only a single transmit antenna among many transmitantennas is utilized for transmission. Compared to full MIMO where all transmitantennas are active concurrently, SM enjoys reduced signal processing complexity atthe receiver, requires no synchronization among the transmit antennas, requires onlya single radio frequency circuit chain at the transmitter, and only a single power amplifierat the transmitter, which consume majority of the transmit power, and are powerinefficient due to linearity constraints. Another approach which enjoys these benefits isantenna selection (AS), where the transmit antenna is chosen based on the forwardchannel state. AS does not have the multiplexing gain of SM since the antenna indexdoes not convey any information, whereas it has been observed that SM cannot exploitthe transmit diversity.