In this paper, a new adaptive HAST scheme is proposed for Space Frequency Block Coded (SFBC)-Orthogonal Frequency Division Multiplexing (OFDM) system. This HAST scheme uses subcarrier by subcarrier antenna selection. The performance of the proposed scheme is analyzed for different antenna configurations with average Signal to Noise Ratio (SNR) gain and Bit Error Rate (BER) parameters. The simulation results prove that the performance of conventional SFBC-OFDM system is greatly improved with the proposed scheme. © 2014 IEEE.

Vinoth Babu K

Department of Communication Engineering

School of Electronics Engineering

Vellore Campus

Ramachandra Reddy G

Nallagatla B.K

John B.B.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Hybrid antenna selection at transmitter (HAST) scheme for future broadband wireless system

2014 International Conference on Communication and Signal Processing

Present wireless technologies demand high quality broadband services even at cell edges. Multi-hop relay (MHR) network is one of the suitable solutions for the above demands. The standards like IEEE 802.16j and Long Term Evolution (LTE) are using relay architecture which mainly focuses on capacity and coverage improvement. In recent days, multi antenna MHR networks are becoming more popular. However obtaining accurate channel state information (CSI) has become a crucial issue in MHR network performance. In this paper, we analyze the effect of delayed CSI at the transmitter (CSIT) in a system with N transmit antennas and one receive antenna, which uses antenna selection (AS). Assuming perfect CSI at the receiver (CSIR), only two out of the N transmit antennas is selected by the receiver and the indices for the same are fed back to the transmitter over a noiseless link with some finite delay. Thus this paper studied the reduced multiple input single output (MISO) systems for MHR networks which perform well even with delayed CSIT. The simulation results also validate the same. © 2015 IEEE.

2015 International Conference on Communications and Signal Processing (ICCSP)

Performance analysis of multi-antenna multi-hop relay networks using antenna selection with delayed channel state information at the transmitter

Journal	Data powered by Typeset2014 International Conference on Communication and Signal Processing
Publisher	Data powered by TypesetIEEE
Open Access	0