Research Article
Adaptive Frame Structure Design and Adaptation Control Mechanism in MIMO-OFDM Systems
@INPROCEEDINGS{10.1109/CHINACOM.2007.4469587, author={Jing Zhang and Xing Fu and Xiaoxuan Zhu and Jin Xu}, title={Adaptive Frame Structure Design and Adaptation Control Mechanism in MIMO-OFDM Systems}, proceedings={2nd International ICST Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2008}, month={3}, keywords={Adaptive; MIMO; OFDM; Frame-structure; Doppler Shift}, doi={10.1109/CHINACOM.2007.4469587} }- Jing Zhang
Xing Fu
Xiaoxuan Zhu
Jin Xu
Year: 2008
Adaptive Frame Structure Design and Adaptation Control Mechanism in MIMO-OFDM Systems
CHINACOM
IEEE
DOI: 10.1109/CHINACOM.2007.4469587
Abstract
With growing demand for large data rate and high reliability wireless communication services, such as multimedia services, link adaptation techniques have emerged as powerful tools for their significant transmission data rate increase, reliability enhancement and spectrum efficiency improvement. In this paper, firstly the redundancy of a unified frame structure has been analyzed and an adaptive frame structure is proposed in pilot aided spatial multiplexing MIMO systems, which provides three different pilot densities for high, middle and low vehicle speed scenarios respectively. Based on the proposed frame structure, a closed-looped control mechanism for frame structure adaptation is developed to adjust pilot density to track the time varying wireless channel characteristics. Finally, its effectiveness has been validated by Monte Carlo simulations.
