Detection Capability of Downlink Signals in Mobile WiMAX and 3GPP LTE with an FFT-Based UWB Receiver

Kenichi TAKIZAWA; Hirotaka YAMANE; Huan-Bang LI; Feng LU; Kohei OHNO; Takuji MOCHIZUKI; Takashi OKADA; Kunio YATA; Hisashi NISHIKAWA; Takehiko KOBAYASHI

doi:10.1587/transfun.E96.A.285

Detection Capability of Downlink Signals in Mobile WiMAX and 3GPP LTE with an FFT-Based UWB Receiver

Kenichi TAKIZAWA, Hirotaka YAMANE, Huan-Bang LI, Feng LU, Kohei OHNO, Takuji MOCHIZUKI, Takashi OKADA, Kunio YATA, Hisashi NISHIKAWA, Takehiko KOBAYASHI

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The paper presents capability of signal detection for realizing coexistence between broadband wireless access (BWA) systems and ultra wideband (UWB) devices. The capability is experimentally evaluated for baseband signals of downlink (DL) in both mobile WiMAX and 3GPP LTE. An UWB receiver based on fast Fourier transform (FFT) compliant with MB-OFDM standard is implemented as a detector of the BWA signals. The capability is evaluated in terms of elapsed time required to achieve signal detection with probability of 99% by the implemented FFT-based UWB receiver at different conditions of the receiver. Decisions on the signal detection are made by the simplest method which is by setting a threshold which is determined by noise floor of the receiver as reference. The experiments have been conducted though baseband signals for both AWGN and multipath fading channels without any synchronization between the DL signals and UWB receiver. In AWGN environment, results show that the elapsed time depends on the duty ratio of the DL signal to be detected, however, the correlation between the required time and duty ratio is not linear since their envelopes of the DL signals are not constant. In multipath fading environments based on channel models commonly employed as mobile radio environments, the required time for the signal detection becomes as 17 times longer than that in AWGN due to its signal attenuation. For robust signal detection in multipath fading environments, it has been revealed that the number of quantization bits at ADC is crucial through the experiments.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E96-A No.1 pp.285-292

Publication Date: 2013/01/01

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Online ISSN: 1745-1337

DOI: 10.1587/transfun.E96.A.285

Type of Manuscript: Special Section PAPER (Special Section on Wideband Systems)

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Kenichi TAKIZAWA, Hirotaka YAMANE, Huan-Bang LI, Feng LU, Kohei OHNO, Takuji MOCHIZUKI, Takashi OKADA, Kunio YATA, Hisashi NISHIKAWA, Takehiko KOBAYASHI, "Detection Capability of Downlink Signals in Mobile WiMAX and 3GPP LTE with an FFT-Based UWB Receiver" in IEICE TRANSACTIONS on Fundamentals, vol. E96-A, no. 1, pp. 285-292, January 2013, doi: 10.1587/transfun.E96.A.285.
Abstract: The paper presents capability of signal detection for realizing coexistence between broadband wireless access (BWA) systems and ultra wideband (UWB) devices. The capability is experimentally evaluated for baseband signals of downlink (DL) in both mobile WiMAX and 3GPP LTE. An UWB receiver based on fast Fourier transform (FFT) compliant with MB-OFDM standard is implemented as a detector of the BWA signals. The capability is evaluated in terms of elapsed time required to achieve signal detection with probability of 99% by the implemented FFT-based UWB receiver at different conditions of the receiver. Decisions on the signal detection are made by the simplest method which is by setting a threshold which is determined by noise floor of the receiver as reference. The experiments have been conducted though baseband signals for both AWGN and multipath fading channels without any synchronization between the DL signals and UWB receiver. In AWGN environment, results show that the elapsed time depends on the duty ratio of the DL signal to be detected, however, the correlation between the required time and duty ratio is not linear since their envelopes of the DL signals are not constant. In multipath fading environments based on channel models commonly employed as mobile radio environments, the required time for the signal detection becomes as 17 times longer than that in AWGN due to its signal attenuation. For robust signal detection in multipath fading environments, it has been revealed that the number of quantization bits at ADC is crucial through the experiments.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/transfun.E96.A.285/_p

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@ARTICLE{e96-a_1_285,
author={Kenichi TAKIZAWA, Hirotaka YAMANE, Huan-Bang LI, Feng LU, Kohei OHNO, Takuji MOCHIZUKI, Takashi OKADA, Kunio YATA, Hisashi NISHIKAWA, Takehiko KOBAYASHI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Detection Capability of Downlink Signals in Mobile WiMAX and 3GPP LTE with an FFT-Based UWB Receiver},
year={2013},
volume={E96-A},
number={1},
pages={285-292},
abstract={The paper presents capability of signal detection for realizing coexistence between broadband wireless access (BWA) systems and ultra wideband (UWB) devices. The capability is experimentally evaluated for baseband signals of downlink (DL) in both mobile WiMAX and 3GPP LTE. An UWB receiver based on fast Fourier transform (FFT) compliant with MB-OFDM standard is implemented as a detector of the BWA signals. The capability is evaluated in terms of elapsed time required to achieve signal detection with probability of 99% by the implemented FFT-based UWB receiver at different conditions of the receiver. Decisions on the signal detection are made by the simplest method which is by setting a threshold which is determined by noise floor of the receiver as reference. The experiments have been conducted though baseband signals for both AWGN and multipath fading channels without any synchronization between the DL signals and UWB receiver. In AWGN environment, results show that the elapsed time depends on the duty ratio of the DL signal to be detected, however, the correlation between the required time and duty ratio is not linear since their envelopes of the DL signals are not constant. In multipath fading environments based on channel models commonly employed as mobile radio environments, the required time for the signal detection becomes as 17 times longer than that in AWGN due to its signal attenuation. For robust signal detection in multipath fading environments, it has been revealed that the number of quantization bits at ADC is crucial through the experiments.},
keywords={},
doi={10.1587/transfun.E96.A.285},
ISSN={1745-1337},
month={January},}

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TY - JOUR
TI - Detection Capability of Downlink Signals in Mobile WiMAX and 3GPP LTE with an FFT-Based UWB Receiver
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 285
EP - 292
AU - Kenichi TAKIZAWA
AU - Hirotaka YAMANE
AU - Huan-Bang LI
AU - Feng LU
AU - Kohei OHNO
AU - Takuji MOCHIZUKI
AU - Takashi OKADA
AU - Kunio YATA
AU - Hisashi NISHIKAWA
AU - Takehiko KOBAYASHI
PY - 2013
DO - 10.1587/transfun.E96.A.285
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E96-A
IS - 1
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - January 2013
AB - The paper presents capability of signal detection for realizing coexistence between broadband wireless access (BWA) systems and ultra wideband (UWB) devices. The capability is experimentally evaluated for baseband signals of downlink (DL) in both mobile WiMAX and 3GPP LTE. An UWB receiver based on fast Fourier transform (FFT) compliant with MB-OFDM standard is implemented as a detector of the BWA signals. The capability is evaluated in terms of elapsed time required to achieve signal detection with probability of 99% by the implemented FFT-based UWB receiver at different conditions of the receiver. Decisions on the signal detection are made by the simplest method which is by setting a threshold which is determined by noise floor of the receiver as reference. The experiments have been conducted though baseband signals for both AWGN and multipath fading channels without any synchronization between the DL signals and UWB receiver. In AWGN environment, results show that the elapsed time depends on the duty ratio of the DL signal to be detected, however, the correlation between the required time and duty ratio is not linear since their envelopes of the DL signals are not constant. In multipath fading environments based on channel models commonly employed as mobile radio environments, the required time for the signal detection becomes as 17 times longer than that in AWGN due to its signal attenuation. For robust signal detection in multipath fading environments, it has been revealed that the number of quantization bits at ADC is crucial through the experiments.
ER -