Soft handoff and uplink capacity in a two-tier CDMA System

Shalinee Kishore; Larry J. Greenstein; H. Vincent Poor; Stuart C. Schwartz

doi:10.1109/TWC.2005.850319

Soft handoff and uplink capacity in a two-tier CDMA System

Shalinee Kishore, Larry J. Greenstein, H. Vincent Poor, Stuart C. Schwartz

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

This paper examines the effect of soft handoff on the uplink user capacity of a code division multiple access system consisting of a single macrocell in which a single hotspot microcell is embedded. The users of these two base stations operate over the same frequency band. In the soft-handoff scenario studied here, both macrocell and microcell base stations serve each system user, and the two received copies of a desired user's signal are summed using maximal ratio combining. Exact and approximate analytical methods are developed to compute uplink user capacity. Simulation results demonstrate a 20% increase in user capacity compared to hard handoff. In addition, simple approximate methods are presented for estimating soft-handoff capacity and are shown to be quite accurate.

Original language	English (US)
Pages (from-to)	1297-1301
Number of pages	5
Journal	IEEE Transactions on Wireless Communications
Volume	4
Issue number	4
DOIs	https://doi.org/10.1109/TWC.2005.850319
State	Published - Jul 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Keywords

Code division multiple access (CDMA)
Macrocell
Microcell
Soft handoff
User capacity

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10.1109/TWC.2005.850319

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title = "Soft handoff and uplink capacity in a two-tier CDMA System",

abstract = "This paper examines the effect of soft handoff on the uplink user capacity of a code division multiple access system consisting of a single macrocell in which a single hotspot microcell is embedded. The users of these two base stations operate over the same frequency band. In the soft-handoff scenario studied here, both macrocell and microcell base stations serve each system user, and the two received copies of a desired user's signal are summed using maximal ratio combining. Exact and approximate analytical methods are developed to compute uplink user capacity. Simulation results demonstrate a 20% increase in user capacity compared to hard handoff. In addition, simple approximate methods are presented for estimating soft-handoff capacity and are shown to be quite accurate.",

keywords = "Code division multiple access (CDMA), Macrocell, Microcell, Soft handoff, User capacity",

author = "Shalinee Kishore and Greenstein, {Larry J.} and Poor, {H. Vincent} and Schwartz, {Stuart C.}",

note = "Funding Information: Manuscript received August 18, 2003; revised January 15, 2004; accepted May 13, 2004. The editor coordinating the review of this paper and approving it for publication is Y.-B. Lin. This research was supported by the New Jersey Commission on Science and Technology, by the National Science Foundation under Grant CCR-00-86017, and by AT&T Laboratories under a Fellowship Program.",

year = "2005",

month = jul,

doi = "10.1109/TWC.2005.850319",

language = "English (US)",

volume = "4",

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journal = "IEEE Transactions on Wireless Communications",

issn = "1536-1276",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - Soft handoff and uplink capacity in a two-tier CDMA System

AU - Kishore, Shalinee

AU - Greenstein, Larry J.

AU - Poor, H. Vincent

AU - Schwartz, Stuart C.

N1 - Funding Information: Manuscript received August 18, 2003; revised January 15, 2004; accepted May 13, 2004. The editor coordinating the review of this paper and approving it for publication is Y.-B. Lin. This research was supported by the New Jersey Commission on Science and Technology, by the National Science Foundation under Grant CCR-00-86017, and by AT&T Laboratories under a Fellowship Program.

PY - 2005/7

Y1 - 2005/7

N2 - This paper examines the effect of soft handoff on the uplink user capacity of a code division multiple access system consisting of a single macrocell in which a single hotspot microcell is embedded. The users of these two base stations operate over the same frequency band. In the soft-handoff scenario studied here, both macrocell and microcell base stations serve each system user, and the two received copies of a desired user's signal are summed using maximal ratio combining. Exact and approximate analytical methods are developed to compute uplink user capacity. Simulation results demonstrate a 20% increase in user capacity compared to hard handoff. In addition, simple approximate methods are presented for estimating soft-handoff capacity and are shown to be quite accurate.

AB - This paper examines the effect of soft handoff on the uplink user capacity of a code division multiple access system consisting of a single macrocell in which a single hotspot microcell is embedded. The users of these two base stations operate over the same frequency band. In the soft-handoff scenario studied here, both macrocell and microcell base stations serve each system user, and the two received copies of a desired user's signal are summed using maximal ratio combining. Exact and approximate analytical methods are developed to compute uplink user capacity. Simulation results demonstrate a 20% increase in user capacity compared to hard handoff. In addition, simple approximate methods are presented for estimating soft-handoff capacity and are shown to be quite accurate.

KW - Code division multiple access (CDMA)

KW - Macrocell

KW - Microcell

KW - Soft handoff

KW - User capacity

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JF - IEEE Transactions on Wireless Communications

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Soft handoff and uplink capacity in a two-tier CDMA System

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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