A Downlink Interference Coordination Algorithm to Suppress Interferences from Macro Base Station

doi:10.13190/jbupt.201206.74.liy

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2012, Vol. 35 ›› Issue (6): 74-77.doi: 10.13190/jbupt.201206.74.liy

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A Downlink Interference Coordination Algorithm to Suppress Interferences from Macro Base Station

^{LI Yuan, PENG Mu-gen}

Key Laboratory of Universal Wireless Communications (Beijing University of Posts and Telecommunications), Ministry of Education, Beijing 100876, China

Received:2011-11-30 Revised:2012-09-21 Online:2012-12-28 Published:2013-01-07
Contact: Yuan LI E-mail:liyuansdu@163.com

Abstract

Abstract:

In heterogeneous networks where the Macro cell is overlaid by Pico cells,severe downlink interference is suffered by Pico users from the Macro base station of high transmission power. A beam nulling-user selection algorithm is proposed to suppress the interference from the Macro station and therefore enhance the system spectrum efficiency. The interference to Pico users is modeled and analyzed in a mathematical way. Simulation is performed to evaluate the enhancement of the proposed algorithm. It is shown that the performance is significantly improved in case of the high signal-to-noise ratio region or large number of Pico cells.

Key words: heterogeneous network, coordinated multi-point technology, beam nulling, user selection

CLC Number:

TN929.53

LI Yuan, PENG Mu-gen. A Downlink Interference Coordination Algorithm to Suppress Interferences from Macro Base Station[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2012, 35(6): 74-77.

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A Downlink Interference Coordination Algorithm to Suppress Interferences from Macro Base Station

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