Development and Evaluation of the SDMA Test Bed for PHS in the Field

Yoshiharu DOI; Jun KITAKADO; Tadayoshi ITO; Takeo MIYATA; Seigo NAKAO; Takeo OHGANE; Yasutaka OGAWA

Development and Evaluation of the SDMA Test Bed for PHS in the Field

Yoshiharu DOI, Jun KITAKADO, Tadayoshi ITO, Takeo MIYATA, Seigo NAKAO, Takeo OHGANE, Yasutaka OGAWA

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Many carriers are introducing multi-media services to satisfy customer demands for these services. In order to provide such services, carrier must increase their system capacity. It is well known that space division multiple access (SDMA) improves system capacity and is compatible with existing access systems. In order to evaluate the performance of SDMA, we developed an SDMA test bed. The test bed maintains the personal handy phone systems (PHS). The PHS adopts time division multiple access (TDMA). Aiming to compare the performance of SDMA and TDMA using the same analog hardware, the SDMA test bed employs a software-defined radio (SDR) technique. This paper shows the outline and performance of the test bed. The results of laboratory tests indicate that the bit error rate (BER) of the test bed operated in the SDMA mode at under 10^-3 when the carrier-tointerference ratio (CIR) was larger than approximately -22 dB. Antenna patterns measured in an anechoic chamber show that the SDMA test bed produces correct antenna patterns when there are three desired signals and one interference signal. The results of the four field tests confirm that the test bed operated while two-multiplex SDMA mode doubled of the traffic and decreased the interference level as compared with the TDMA mode. Furthermore, the test bed operated while threemultiplex SDMA mode improves the traffic about 2.4 to 2.7 times. The SDMA test bed decreased the impact of the adjusted TDMA base station (BS). Therefore, we confirmed that the SDMA improves system capacity without any degradation.

Publication: IEICE TRANSACTIONS on Communications Vol.E86-B No.12 pp.3433-3440

Publication Date: 2003/12/01

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Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio Technology and Its Applications)

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Yoshiharu DOI, Jun KITAKADO, Tadayoshi ITO, Takeo MIYATA, Seigo NAKAO, Takeo OHGANE, Yasutaka OGAWA, "Development and Evaluation of the SDMA Test Bed for PHS in the Field" in IEICE TRANSACTIONS on Communications, vol. E86-B, no. 12, pp. 3433-3440, December 2003, doi: .
Abstract: Many carriers are introducing multi-media services to satisfy customer demands for these services. In order to provide such services, carrier must increase their system capacity. It is well known that space division multiple access (SDMA) improves system capacity and is compatible with existing access systems. In order to evaluate the performance of SDMA, we developed an SDMA test bed. The test bed maintains the personal handy phone systems (PHS). The PHS adopts time division multiple access (TDMA). Aiming to compare the performance of SDMA and TDMA using the same analog hardware, the SDMA test bed employs a software-defined radio (SDR) technique. This paper shows the outline and performance of the test bed. The results of laboratory tests indicate that the bit error rate (BER) of the test bed operated in the SDMA mode at under 10^-3 when the carrier-tointerference ratio (CIR) was larger than approximately -22 dB. Antenna patterns measured in an anechoic chamber show that the SDMA test bed produces correct antenna patterns when there are three desired signals and one interference signal. The results of the four field tests confirm that the test bed operated while two-multiplex SDMA mode doubled of the traffic and decreased the interference level as compared with the TDMA mode. Furthermore, the test bed operated while threemultiplex SDMA mode improves the traffic about 2.4 to 2.7 times. The SDMA test bed decreased the impact of the adjusted TDMA base station (BS). Therefore, we confirmed that the SDMA improves system capacity without any degradation.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/e86-b_12_3433/_p

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@ARTICLE{e86-b_12_3433,
author={Yoshiharu DOI, Jun KITAKADO, Tadayoshi ITO, Takeo MIYATA, Seigo NAKAO, Takeo OHGANE, Yasutaka OGAWA, },
journal={IEICE TRANSACTIONS on Communications},
title={Development and Evaluation of the SDMA Test Bed for PHS in the Field},
year={2003},
volume={E86-B},
number={12},
pages={3433-3440},
abstract={Many carriers are introducing multi-media services to satisfy customer demands for these services. In order to provide such services, carrier must increase their system capacity. It is well known that space division multiple access (SDMA) improves system capacity and is compatible with existing access systems. In order to evaluate the performance of SDMA, we developed an SDMA test bed. The test bed maintains the personal handy phone systems (PHS). The PHS adopts time division multiple access (TDMA). Aiming to compare the performance of SDMA and TDMA using the same analog hardware, the SDMA test bed employs a software-defined radio (SDR) technique. This paper shows the outline and performance of the test bed. The results of laboratory tests indicate that the bit error rate (BER) of the test bed operated in the SDMA mode at under 10^-3 when the carrier-tointerference ratio (CIR) was larger than approximately -22 dB. Antenna patterns measured in an anechoic chamber show that the SDMA test bed produces correct antenna patterns when there are three desired signals and one interference signal. The results of the four field tests confirm that the test bed operated while two-multiplex SDMA mode doubled of the traffic and decreased the interference level as compared with the TDMA mode. Furthermore, the test bed operated while threemultiplex SDMA mode improves the traffic about 2.4 to 2.7 times. The SDMA test bed decreased the impact of the adjusted TDMA base station (BS). Therefore, we confirmed that the SDMA improves system capacity without any degradation.},
keywords={},
doi={},
ISSN={},
month={December},}

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TY - JOUR
TI - Development and Evaluation of the SDMA Test Bed for PHS in the Field
T2 - IEICE TRANSACTIONS on Communications
SP - 3433
EP - 3440
AU - Yoshiharu DOI
AU - Jun KITAKADO
AU - Tadayoshi ITO
AU - Takeo MIYATA
AU - Seigo NAKAO
AU - Takeo OHGANE
AU - Yasutaka OGAWA
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E86-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2003
AB - Many carriers are introducing multi-media services to satisfy customer demands for these services. In order to provide such services, carrier must increase their system capacity. It is well known that space division multiple access (SDMA) improves system capacity and is compatible with existing access systems. In order to evaluate the performance of SDMA, we developed an SDMA test bed. The test bed maintains the personal handy phone systems (PHS). The PHS adopts time division multiple access (TDMA). Aiming to compare the performance of SDMA and TDMA using the same analog hardware, the SDMA test bed employs a software-defined radio (SDR) technique. This paper shows the outline and performance of the test bed. The results of laboratory tests indicate that the bit error rate (BER) of the test bed operated in the SDMA mode at under 10^-3 when the carrier-tointerference ratio (CIR) was larger than approximately -22 dB. Antenna patterns measured in an anechoic chamber show that the SDMA test bed produces correct antenna patterns when there are three desired signals and one interference signal. The results of the four field tests confirm that the test bed operated while two-multiplex SDMA mode doubled of the traffic and decreased the interference level as compared with the TDMA mode. Furthermore, the test bed operated while threemultiplex SDMA mode improves the traffic about 2.4 to 2.7 times. The SDMA test bed decreased the impact of the adjusted TDMA base station (BS). Therefore, we confirmed that the SDMA improves system capacity without any degradation.
ER -