NDLI: Antenna Scaling of Multi-Antenna Gaussian Broadcast Channels

Content Provider	IEEE Xplore Digital Library
Author	Hyung-Tae Kim Sung Hoon Lim Sang-Woon Jeon Sae-Young Chung
Copyright Year	2008
Description	Author affiliation: Sch. of EECS, KAIST, Daejeon (Hyung-Tae Kim; Sung Hoon Lim; Sang-Woon Jeon; Sae-Young Chung)
Abstract	We study the gain of dirty paper coding (DPC) by investigating the sum rate as the number of antennas at the transmitter grows in a multi-user MISO broadcast channel. We show a comparative sum rate gain of DPC over the zero forcing (ZF) scheme. The sum rate gap between DPC and ZF is analyzed assuming asymptotically high signal-to-noise ratio (SNR) in the case when the number of users is the same as the number of antennas at the transmitter. As a result, we find the sum rate gap is linearly increased as the number of transmit antennas is increased. Also, numerical results of DPC and ZF are shown in a M-by-1 MISO, M-user Rayleigh fading channel, where M=2, 4, 8, 16. We conclude that the more the number of transmit antennas is, the more attractive DPC becomes with respect to the sum rate.
Starting Page	14
Ending Page	16
File Size	1363970
Page Count	3
File Format	PDF
ISBN	9788955191363
ISSN	17389445
DOI	10.1109/ICACT.2008.4493701
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-02-17
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	ETRI, NIA
Subject Keyword	Broadcasting Transmitting antennas Transmitters Downlink Signal to noise ratio Fading Signal analysis Symmetric matrices Gaussian distribution Receiving antennas
Content Type	Text
Resource Type	Article

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