Performance of Adaptive Antennas in FH-GSM Using Conventional Beamforming

Preben Elgaard Mogensen, P Leth-Espensen, P. Zetterberg, K.I. Pedersen, F. Frederiksen

Research output: Contribution to journalConference article in JournalResearch

5 Citations (Scopus)

Abstract

This paper presents the performance of adaptive antennas in a 1/3 reuse frequency hopping GSM network using conventional beamforming. It mainly focuses on C/I improvement for the purpose of capacity enhancement. The performance evaluation has been conducted by means of network computer simulations, where measured time-space radio channel impulse responses are applied for the desired user in the network. Measurements with an M = 8 element uniform linear array were conducted in the cities of Aarhus, Denmark, and Stockholm, Sweden. The simulated C/I improvement shows an almost 10* log(10)(M) behavior for low azimuth spread values. For large values of azimuth spread (relative to the antenna beamwidth), the performance gain is reduced significantly. For an azimuth spread of 10 degrees-12 degrees, which has been measured in urban macro-cellular environments, the C/I gain for M = 8 is reduced to approx. 5.5-7.5 dB (which should be compared to the theoretical value of 9 dB for a point source). The designed DoA algorithm is very robust to co-channel interference and only a small degradation in performance is observed for single element C/I down to approx. -8 dB. We conclude that the designed beamforming implementation facilitates a potential capacity gain of x3 in a 1/3 reuse FH-GSM network for an array size of M = 4-6.
Original languageEnglish
JournalWireless Personal Communications
Volume14
Issue number3
Pages (from-to)255-274
Number of pages20
ISSN0929-6212
DOIs
Publication statusPublished - 2000
EventPerformance of Adaptive Antennas in FH-GSM Using Conventional Beamforming -
Duration: 19 May 2010 → …

Conference

ConferencePerformance of Adaptive Antennas in FH-GSM Using Conventional Beamforming
Period19/05/2010 → …

Cite this

Mogensen, Preben Elgaard ; Leth-Espensen, P ; Zetterberg, P. ; Pedersen, K.I. ; Frederiksen, F. / Performance of Adaptive Antennas in FH-GSM Using Conventional Beamforming. In: Wireless Personal Communications. 2000 ; Vol. 14, No. 3. pp. 255-274.
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title = "Performance of Adaptive Antennas in FH-GSM Using Conventional Beamforming",
abstract = "This paper presents the performance of adaptive antennas in a 1/3 reuse frequency hopping GSM network using conventional beamforming. It mainly focuses on C/I improvement for the purpose of capacity enhancement. The performance evaluation has been conducted by means of network computer simulations, where measured time-space radio channel impulse responses are applied for the desired user in the network. Measurements with an M = 8 element uniform linear array were conducted in the cities of Aarhus, Denmark, and Stockholm, Sweden. The simulated C/I improvement shows an almost 10* log(10)(M) behavior for low azimuth spread values. For large values of azimuth spread (relative to the antenna beamwidth), the performance gain is reduced significantly. For an azimuth spread of 10 degrees-12 degrees, which has been measured in urban macro-cellular environments, the C/I gain for M = 8 is reduced to approx. 5.5-7.5 dB (which should be compared to the theoretical value of 9 dB for a point source). The designed DoA algorithm is very robust to co-channel interference and only a small degradation in performance is observed for single element C/I down to approx. -8 dB. We conclude that the designed beamforming implementation facilitates a potential capacity gain of x3 in a 1/3 reuse FH-GSM network for an array size of M = 4-6.",
author = "Mogensen, {Preben Elgaard} and P Leth-Espensen and P. Zetterberg and K.I. Pedersen and F. Frederiksen",
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Mogensen, PE, Leth-Espensen, P, Zetterberg, P, Pedersen, KI & Frederiksen, F 2000, 'Performance of Adaptive Antennas in FH-GSM Using Conventional Beamforming', Wireless Personal Communications, vol. 14, no. 3, pp. 255-274. https://doi.org/10.1023/A:1008975420402

Performance of Adaptive Antennas in FH-GSM Using Conventional Beamforming. / Mogensen, Preben Elgaard; Leth-Espensen, P; Zetterberg, P.; Pedersen, K.I.; Frederiksen, F.

In: Wireless Personal Communications, Vol. 14, No. 3, 2000, p. 255-274.

Research output: Contribution to journalConference article in JournalResearch

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N2 - This paper presents the performance of adaptive antennas in a 1/3 reuse frequency hopping GSM network using conventional beamforming. It mainly focuses on C/I improvement for the purpose of capacity enhancement. The performance evaluation has been conducted by means of network computer simulations, where measured time-space radio channel impulse responses are applied for the desired user in the network. Measurements with an M = 8 element uniform linear array were conducted in the cities of Aarhus, Denmark, and Stockholm, Sweden. The simulated C/I improvement shows an almost 10* log(10)(M) behavior for low azimuth spread values. For large values of azimuth spread (relative to the antenna beamwidth), the performance gain is reduced significantly. For an azimuth spread of 10 degrees-12 degrees, which has been measured in urban macro-cellular environments, the C/I gain for M = 8 is reduced to approx. 5.5-7.5 dB (which should be compared to the theoretical value of 9 dB for a point source). The designed DoA algorithm is very robust to co-channel interference and only a small degradation in performance is observed for single element C/I down to approx. -8 dB. We conclude that the designed beamforming implementation facilitates a potential capacity gain of x3 in a 1/3 reuse FH-GSM network for an array size of M = 4-6.

AB - This paper presents the performance of adaptive antennas in a 1/3 reuse frequency hopping GSM network using conventional beamforming. It mainly focuses on C/I improvement for the purpose of capacity enhancement. The performance evaluation has been conducted by means of network computer simulations, where measured time-space radio channel impulse responses are applied for the desired user in the network. Measurements with an M = 8 element uniform linear array were conducted in the cities of Aarhus, Denmark, and Stockholm, Sweden. The simulated C/I improvement shows an almost 10* log(10)(M) behavior for low azimuth spread values. For large values of azimuth spread (relative to the antenna beamwidth), the performance gain is reduced significantly. For an azimuth spread of 10 degrees-12 degrees, which has been measured in urban macro-cellular environments, the C/I gain for M = 8 is reduced to approx. 5.5-7.5 dB (which should be compared to the theoretical value of 9 dB for a point source). The designed DoA algorithm is very robust to co-channel interference and only a small degradation in performance is observed for single element C/I down to approx. -8 dB. We conclude that the designed beamforming implementation facilitates a potential capacity gain of x3 in a 1/3 reuse FH-GSM network for an array size of M = 4-6.

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