Proceedings ArticleDOI
Performance tradeoffs between diversity schemes in wireless systems
Goldy Rose Sebastian,K. Vinoth Babu +1 more
- pp 863-867
TLDR
A comparative study of various diversity schemes with and without feedback is presented and the weight vector for equal gain transmission (EGT) is modified using quantized feedback of the channel state information (CSI) so that a close optimal performance can be obtained with less feedback.Abstract:
Multiple antennas at the transmitter side and/or at the receiver side can improve the capacity and/or quality of reception in a fading environment. In this paper, a comparative study of various diversity schemes with and without feedback is presented. Simulation results show that maximal ratio combining (MRC) and transmit beamforming provide maximum performance. The other focus of this paper is to modify the weight vector for equal gain transmission (EGT) using quantized feedback of the channel state information (CSI) so that a close optimal performance can be obtained with less feedback. Simulation results show that three bits is sufficient to achieve this performance.read more
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Journal ArticleDOI
A simple transmit diversity technique for wireless communications
TL;DR: This paper presents a simple two-branch transmit diversity scheme that provides the same diversity order as maximal-ratio receiver combining (MRRC) with one transmit antenna, and two receive antennas.
Journal ArticleDOI
Antenna selection in MIMO systems
S. Sanayei,Aria Nosratinia +1 more
TL;DR: Classic results on selection diversity, followed by a discussion of antenna selection algorithms at the transmit and receive sides, and extensions of classical results to antenna subset selection are presented.
Journal ArticleDOI
Maximum ratio transmission
TL;DR: In this article, the authors present the concept, principles and analysis of maximum ratio transmission for wireless communications, where multiple antennas are used for both transmission and reception, and show that the average overall signal-to-mise ratio (SNR) is proportional to the cross correlation between channel vectors and that error probability decreases inversely with the (L/spl times/K)th power of the average SNR.
Journal ArticleDOI
Efficient use of side information in multiple-antenna data transmission over fading channels
TL;DR: Performance limits for two closely related communication scenarios involving a wireless system with multiple-element transmitter antenna arrays are derived and it is shown that, when properly chosen, even a small amount of side information can be quite valuable.
Journal ArticleDOI
Equal gain transmission in multiple-input multiple-output wireless systems
David J. Love,Robert W. Heath +1 more
TL;DR: The paper proposes equal gain transmission (EGT) to provide diversity advantage in MIMO systems experiencing Rayleigh fading and an algorithm to construct a beamforming vector codebook that guarantees full diversity order.
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