Capacity-Coverage Analysis of the TDD and FDD Mode in UMTS at 1920 MHz

Harald Haas; S. McLaughlin; G. J. R. Povey

doi:10.1049/ip-com:20020109

Capacity-Coverage Analysis of the TDD and FDD Mode in UMTS at 1920 MHz

Harald Haas, S. McLaughlin, G. J. R. Povey

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

13 Citations (Scopus)

Abstract

In the Universal Mobile Telephony System (UMTS) the frequency division duplex (FDD) and time division duplex (TDD) modes have adjacent carriers at 1920 MHz. This creates adjacent channel interference (ACI) between the two different air interfaces. Since different duplexing modes are used, the implications for each system are different, with respect to capacity and coverage: these implications are investigated. The separation distance of the TDD and FDD base station and the load in each system are varied and a symmetrical speech service in both systems is considered, with non-ideal power control assumed. It is found that for an FDD cell radius of 1000 m, a TDD cell radius of 50 m and 10% maximal tolerable outage, the effects of ACI on capacity can be compensated by dynamically increasing the required power at each BS, without affecting the coverage.

Original language	English
Pages (from-to)	51 - 57
Number of pages	7
Journal	IEE Proceedings - Communications
Volume	149
Issue number	1
DOIs	https://doi.org/10.1049/ip-com:20020109
Publication status	Published - Feb 2002

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title = "Capacity-Coverage Analysis of the TDD and FDD Mode in UMTS at 1920 MHz",

abstract = "In the Universal Mobile Telephony System (UMTS) the frequency division duplex (FDD) and time division duplex (TDD) modes have adjacent carriers at 1920 MHz. This creates adjacent channel interference (ACI) between the two different air interfaces. Since different duplexing modes are used, the implications for each system are different, with respect to capacity and coverage: these implications are investigated. The separation distance of the TDD and FDD base station and the load in each system are varied and a symmetrical speech service in both systems is considered, with non-ideal power control assumed. It is found that for an FDD cell radius of 1000 m, a TDD cell radius of 50 m and 10% maximal tolerable outage, the effects of ACI on capacity can be compensated by dynamically increasing the required power at each BS, without affecting the coverage.",

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AU - McLaughlin, S.

AU - Povey, G. J. R.

PY - 2002/2

Y1 - 2002/2

N2 - In the Universal Mobile Telephony System (UMTS) the frequency division duplex (FDD) and time division duplex (TDD) modes have adjacent carriers at 1920 MHz. This creates adjacent channel interference (ACI) between the two different air interfaces. Since different duplexing modes are used, the implications for each system are different, with respect to capacity and coverage: these implications are investigated. The separation distance of the TDD and FDD base station and the load in each system are varied and a symmetrical speech service in both systems is considered, with non-ideal power control assumed. It is found that for an FDD cell radius of 1000 m, a TDD cell radius of 50 m and 10% maximal tolerable outage, the effects of ACI on capacity can be compensated by dynamically increasing the required power at each BS, without affecting the coverage.

AB - In the Universal Mobile Telephony System (UMTS) the frequency division duplex (FDD) and time division duplex (TDD) modes have adjacent carriers at 1920 MHz. This creates adjacent channel interference (ACI) between the two different air interfaces. Since different duplexing modes are used, the implications for each system are different, with respect to capacity and coverage: these implications are investigated. The separation distance of the TDD and FDD base station and the load in each system are varied and a symmetrical speech service in both systems is considered, with non-ideal power control assumed. It is found that for an FDD cell radius of 1000 m, a TDD cell radius of 50 m and 10% maximal tolerable outage, the effects of ACI on capacity can be compensated by dynamically increasing the required power at each BS, without affecting the coverage.

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DO - 10.1049/ip-com:20020109

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SP - 51

EP - 57

JO - IEE Proceedings - Communications

JF - IEE Proceedings - Communications

IS - 1

ER -

Capacity-Coverage Analysis of the TDD and FDD Mode in UMTS at 1920 MHz

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