Downlink site selection transmit diversity with power allocation for A 2-dimensional block spread DS-CDMA cellular system

Le Liu; Fumiyuki Adachi

doi:10.1109/WCNC.2007.377

Downlink site selection transmit diversity with power allocation for A 2-dimensional block spread DS-CDMA cellular system

Le Liu, Fumiyuki Adachi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

2-dimensional (2D) block spread direct sequence-code division multiple access (DS-CDMA) allows mutli-rate/mutli-eonneetion without causing downlink multi-access interference (MAI) in the presence of a frequency-selective fading channel. However, in a cellular system, the inter-cell interference remains. The site selection diversity transmission (SSDT) can be used to reduce the inter-cell interference and increase the downlink capacity. In this paper, we show that if adaptive power allocation is applied, where the BS allocates different power levels to different users according to their channel conditions, 2D block spread DS-CDMA with SSDT provides larger downlink capacity than the conventional DS-CDMA with SSDT.

Original language	English
Title of host publication	2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Pages	2014-2018
Number of pages	5
DOIs	https://doi.org/10.1109/WCNC.2007.377
Publication status	Published - 2007 Nov 27
Event	2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 - Kowloon, China Duration: 2007 Mar 11 → 2007 Mar 15

Publication series

Name	IEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)	1525-3511

Other

Other	2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Country/Territory	China
City	Kowloon
Period	07/3/11 → 07/3/15

ASJC Scopus subject areas

Engineering(all)

Access to Document

10.1109/WCNC.2007.377

Cite this

Downlink site selection transmit diversity with power allocation for A 2-dimensional block spread DS-CDMA cellular system. / Liu, Le; Adachi, Fumiyuki.

2007 IEEE Wireless Communications and Networking Conference, WCNC 2007. 2007. p. 2014-2018 4204553 (IEEE Wireless Communications and Networking Conference, WCNC).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Liu, L & Adachi, F 2007, Downlink site selection transmit diversity with power allocation for A 2-dimensional block spread DS-CDMA cellular system. in 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007., 4204553, IEEE Wireless Communications and Networking Conference, WCNC, pp. 2014-2018, 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007, Kowloon, China, 07/3/11. https://doi.org/10.1109/WCNC.2007.377

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abstract = "2-dimensional (2D) block spread direct sequence-code division multiple access (DS-CDMA) allows mutli-rate/mutli-eonneetion without causing downlink multi-access interference (MAI) in the presence of a frequency-selective fading channel. However, in a cellular system, the inter-cell interference remains. The site selection diversity transmission (SSDT) can be used to reduce the inter-cell interference and increase the downlink capacity. In this paper, we show that if adaptive power allocation is applied, where the BS allocates different power levels to different users according to their channel conditions, 2D block spread DS-CDMA with SSDT provides larger downlink capacity than the conventional DS-CDMA with SSDT.",

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N2 - 2-dimensional (2D) block spread direct sequence-code division multiple access (DS-CDMA) allows mutli-rate/mutli-eonneetion without causing downlink multi-access interference (MAI) in the presence of a frequency-selective fading channel. However, in a cellular system, the inter-cell interference remains. The site selection diversity transmission (SSDT) can be used to reduce the inter-cell interference and increase the downlink capacity. In this paper, we show that if adaptive power allocation is applied, where the BS allocates different power levels to different users according to their channel conditions, 2D block spread DS-CDMA with SSDT provides larger downlink capacity than the conventional DS-CDMA with SSDT.

AB - 2-dimensional (2D) block spread direct sequence-code division multiple access (DS-CDMA) allows mutli-rate/mutli-eonneetion without causing downlink multi-access interference (MAI) in the presence of a frequency-selective fading channel. However, in a cellular system, the inter-cell interference remains. The site selection diversity transmission (SSDT) can be used to reduce the inter-cell interference and increase the downlink capacity. In this paper, we show that if adaptive power allocation is applied, where the BS allocates different power levels to different users according to their channel conditions, 2D block spread DS-CDMA with SSDT provides larger downlink capacity than the conventional DS-CDMA with SSDT.

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Downlink site selection transmit diversity with power allocation for A 2-dimensional block spread DS-CDMA cellular system

Abstract

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