Downlink MIMO-OFDM system with adaptive resource allocation over Rayleigh fading space channel

Lee Li; Guangxi Zhu; Xiao Xiao; Wenming Liu

doi:10.1117/12.656735

4 January 2006 Downlink MIMO-OFDM system with adaptive resource allocation over Rayleigh fading space channel

Lee Li, Guangxi Zhu, Xiao Xiao, Wenming Liu

Proceedings Volume 5985, International Conference on Space Information Technology; 598511 (2006) https://doi.org/10.1117/12.656735
Event: International Conference on Space information Technology, 2005, Wuhan, China

Abstract

In this paper, we investigate adaptive resource allocation strategy for downlink multi-input-multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. We design a transmit scheme as a concatenation of dynamic sub-carriers and bit assignment, adaptive modulation and beam-forming. Our adaptive goal is margin adaptive optimization, which minimize the total transmission power subject to a target BER performance constraint on each sub-carrier, while meeting a constant bit rate. By use of Rayleigh fading model assumption, we introduce a new concept: the channel feedback coefficient, so as to compensate the error inducted by feedback channel. Simulation results show that the proposed resource allocation scheme outperforms the multi-user MIMO-OFDM with static allocation technique, and can lessen the performance loss caused by channel state information feedback error.

Citation Download Citation

Lee Li, Guangxi Zhu, Xiao Xiao, and Wenming Liu "Downlink MIMO-OFDM system with adaptive resource allocation over Rayleigh fading space channel", Proc. SPIE 5985, International Conference on Space Information Technology, 598511 (4 January 2006); https://doi.org/10.1117/12.656735

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available