Channel Capacity Analysis of Distributed Antenna Systems

doi:10.13190/jbupt.200806.125.198

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (6): 125-128.doi: 10.13190/jbupt.200806.125.198

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Channel Capacity Analysis of Distributed Antenna Systems

ZHANG Ning-bo1,2，KANG Gui-xia1,2，CAO Peng1,2，ZHANG Ping1,2，LIU Ze-min1

(1. Beijing University of Posts and Telecommunications, Key Laboratory of Universal Wireless Communications , Ministry of Education , Beijing
100876 , China ; 2. Beijing University of Posts and Telecommunications ,Wireless Technology Innovation Institute, Beijing 100876 , China)

Received:2008-05-08 Revised:2008-07-21 Online:2008-12-31 Published:2008-12-31
Contact: ZHANG Ning-bo

Abstract

Abstract:

To analyze the channel capacity of multiple input multiple output-distributed antenna systems (MIMO-DAS) , a multiple cell channel model is proposed, and the closed-form expression for the ergodic capacity of downlink transmission in MIMO-DAS is also derived. Based on this expression, the channel capacities of distributed systems and centralized systems are compared. Simulation results show that compared with centralized systems, distributed systems improve channel capacity in the over 80% area of the cell, it is also shown that fewer optimal antennas are selected for transmission can get capacity gains greatly, when one optimal antenna is chosen, the channel capacity reaches the peak.

Key words: multiple input multiple output-distributed antenna systems, centralized antenna systems, channel capacity, antenna selection

CLC Number:

TN911.22

ZHANG Ning-bo1,2，KANG Gui-xia1,2，CAO Peng1,2，ZHANG Ping1,2，LIU Ze-min1. Channel Capacity Analysis of Distributed Antenna Systems[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(6): 125-128.

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Channel Capacity Analysis of Distributed Antenna Systems

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