Title :
Multi-Cell Cooperative System with Inaccurate Channel Knowledge
Author :
Kim, Younsun ; Shao, Xun ; Hui Liu
Author_Institution :
Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA
Abstract :
The impact of inaccurate channel knowledge on the system performance of a cooperative multi-cell system is studied. Using optimization theory, we investigate the performance degradation due to optimizing the collaborative downlink transmit signals of multiple base stations (BSs) based on inaccurate channel knowledge. Two important sources of channel knowledge inaccuracy are considered: quantization and delay. Based on mathematical analysis, multi-cell systems with different levels of cooperation are numerically evaluated and compared.
Keywords :
cellular radio; mathematical analysis; optimisation; radio links; base stations; collaborative downlink transmit signals; cooperative multicell system; inaccurate channel knowledge; mathematical analysis; multicell cooperative system; optimization theory; Centralized control; Collaboration; Communication system control; Control systems; Cooperative systems; Degradation; Downlink; Feedback; MIMO; System performance;
Conference_Titel :
Communications (ICC), 2010 IEEE International Conference on
Conference_Location :
Cape Town
Print_ISBN :
978-1-4244-6402-9
DOI :
10.1109/ICC.2010.5502455
