Volume 8 Issue 1 - January 2017

  • 1. Combination of sm & stbc for mimo communications: peformance evaluation of glstc to improve diversity & multiplexing gain

    Authors : Ronak R. Vashi, Prof. Amit H. Choksi

    Pages : 254-260

    DOI : http://dx.doi.org/10.21172/1.81.034

    Keywords : MIMO System, Group layers space-time coding (GLSTC), SM-spatial Multiplexing, STBC-Space-time block code, ISI- Inter Symbol Interference

    Abstract :

    As MIMO system can provide two types of gains so that most current research focuses on designing schemes to extract either maximal diversity gain or maximal spatial multiplexing gain. MIMO can achieve sufficiently high data-rate using SM technique, which transmit independent stream over different transmitting antennas simultaneously. So, channel capacity increases linearly with minimum number of transmitting and receiving antennas. However, Due to channel impairments such as multipath propagation, the capacity of wireless channels cannot be fully exploited. Hence SM MIMO detectors are evaluated on flat fading channel, but in real time environment channel is highly time-varying and frequency selective. OFDM is an efficient technique to combat the ISI in frequency selective channel. So this paper introduces GLSTC technique to overcome the above problem. Here GLSTC technique is a trade-off technique between multiplexing gain and diversity gain is evaluated. This GLSTC technique combines both SM and STBC techniques to achieve both higher bit rate and better quality simultaneously rather than SM MIMO detectors.

    Citing this Journal Article :

    Ronak R. Vashi, Prof. Amit H. Choksi, "Combination of sm & stbc for mimo communications: peformance evaluation of glstc to improve diversity & multiplexing gain ", https://www.ijltet.org/journal_details.php?id=910&j_id=3589, Volume 8 Issue 1 - January 2017, 254-260, #ijltetorg