tailieunhanh - Báo cáo hóa học: " Space-Time Water-Filling for Composite MIMO Fading Channels"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Space-Time Water-Filling for Composite MIMO Fading Channels | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2006 Article ID 16281 Pages 1-8 DOI WCN 2006 16281 Space-Time Water-Filling for Composite MIMO Fading Channels Zukang Shen Robert W. Heath Jr. Jeffrey G. Andrews and Brian L. Evans Department of Electrical and Computer Engineering University of Texas at Austin Austin TX 78712 USA Received 1 September 2005 Revised 14 February 2006 Accepted 13 March 2006 We analyze the ergodic capacity and channel outage probability for a composite MIMO channel model which includes both fast fading and shadowing effects. The ergodic capacity and exact channel outage probability with space-time water-filling can be evaluated through numerical integrations which can be further simplified by using approximated empirical eigenvalue and maximal eigenvalue distribution of MIMO fading channels. We also compare the performance of space-time water-filling with spatial water-filling. For MIMO channels with small shadowing effects spatial water-filling performs very close to space-time water-filling in terms of ergodic capacity. For MIMO channels with large shadowing effects however space-time water-filling achieves significantly higher capacity per antenna than spatial water-filling at low to moderate SNR regimes but with a much higher channel outage probability. We show that the analytical capacity and outage probability results agree very well with those obtained from Monte Carlo simulations. Copyright 2006 Zukang Shen et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Multiple-input multiple-output MIMO communication systems exploit the degrees of freedom introduced by multiple transmit and receive antennas to offer high spectral efficiency. In narrowband channels when channel state information is available .

TÀI LIỆU LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.