On Optimizing Transmit Antenna Placement for Downlink Distributed Antenna Systems With Zero-Forcing Beamforming

被引：0

作者：

Thaikerd, Thantip ^{[1
]}

Santipach, Wiroonsak ^{[1
]}

机构：

[1] Kasetsart Univ, Fac Engn, Dept Elect Engn, Bangkok 10900, Thailand

来源：

2015 12TH INTERNATIONAL CONFERENCE ON ELECTRICAL ENGINEERING/ELECTRONICS, COMPUTER, TELECOMMUNICATIONS AND INFORMATION TECHNOLOGY (ECTI-CON) | 2015年

关键词：

Distributed antenna system (DAS); circular antenna layout; downlink; zero-forcing beamforming; nonuniform user density; sum-rate analysis;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

We consider a downlink distributed antenna system (DAS) in which transmit antennas are placed in a circular layout and each mobile user is equipped with a single receive antenna. Assuming zero-forcing beamforming transmission, a base station randomly selects users to which it transmits data. We derive the upper bound on a sum of all users' achievable rates and use the bound to estimate the optimal radius of the antenna layout that maximizes the sum rate. Numerical examples show that the optimal radius depends on the number of transmit antennas, signal-to-noise ratio, and variance of user density. The sum rate of DAS with optimized placement of transmit antennas can be significantly higher than that of a co-located antenna system (CAS).

引用

页数：5

共 12 条

[1]

[Anonymous], 2012, P 2012 ASIA PACIFIC

[2] Downlink performance and capacity of distributed antenna systems in a multicell environment [J].

Choi, Wan ;

Andrews, Jeffrey G. .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2007, 6 (01) :69-73

[3]

Gan RS, 2007, IEEE VTS VEH TECHNOL, P596

[4] Transmit selection in spatial multiplexing systems [J].

Gore, DA ;

Heath, RW ;

Paulraj, AJ .

IEEE COMMUNICATIONS LETTERS, 2002, 6 (11) :491-493

[5] The Antitumor Effects of Triterpenoid Saponins from the Anemone flaccida and the Underlying Mechanism [J].

Han, Lin-Tao ;

Fang, Ying ;

Li, Ming-Ming ;

Yang, Hong-Bing ;

Huang, Fang .

EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE, 2013, 2013

[6] Multiuser MIMO in Distributed Antenna Systems With Out-of-Cell Interference [J].

Heath, Robert W., Jr. ;

Wu, Tao ;

Kwon, Young Hoon ;

Soong, Anthony C. K. .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2011, 59 (10) :4885-4899

[7] User Selection for Multiuser MIMO Downlink With Zero-Forcing Beamforming [J].

Huang, Shengchun ;

Yin, Hao ;

Wu, Jiangxing ;

Leung, Victor C. M. .

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2013, 62 (07) :3084-3097

[8] Optimal Number of Users in Zero-Forcing Based Multiuser MIMO Systems with Large Number of Antennas [J].

Jung, Minchae ;

Kim, Younsun ;

Lee, Juho ;

Choi, Sooyong .

JOURNAL OF COMMUNICATIONS AND NETWORKS, 2013, 15 (04) :362-369

[9] Antenna Placement Optimization for Distributed Antenna Systems [J].

Park, Eunsung ;

Lee, Sang-Rim ;

Lee, Inkyu .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2012, 11 (07) :2468-2477

[10]

Pauraj A., 2003, INTRO SPACE TIME WIR

← 1 2 →