The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Kaedah penyegerakan pemasaan simbol dicadangkan untuk merealisasikan penerima radio perisian berbilang mod dan berbilang perkhidmatan. Kaedah ini membolehkan carian tepat untuk pemasaan simbol optimum tanpa sebarang perkakasan berlebihan seperti peranti penukaran kadar pensampelan, apabila jam sistem masa bukan integer untuk kadar simbol sistem sasaran. Sehubungan itu, penerima berbilang mod dan berbilang perkhidmatan boleh menetapkan jam sistem sewenang-wenangnya untuk kadar simbol sistem sasaran, dan bilangan penukar A/D boleh dikurangkan kepada minimum. Juga, ia mungkin membawa kepada pengurangan masa pelaksanaan untuk perkakasan pemprosesan isyarat digital, dan mengurangkan beban pada memori dalam penerima radio perisian berbilang mod dan berbilang perkhidmatan, kerana tiada penukaran kadar pensampelan diperlukan. Keberkesanan kaedah yang dicadangkan untuk digunakan dengan penerima radio perisian berbilang mod dan pelbagai perkhidmatan untuk perkhidmatan ITS masa hadapan, iaitu GPS (Sistem Penentududukan Global), ETC (sistem Kutipan Tol Elektrik), dan PHS Jepun (Personal Handy-phone). Sistem) diandaikan, dan sistem yang sepatutnya dinilai oleh simulasi komputer. Prestasi jitter di bawah persekitaran AWGN (Additive White Gaussian Noise) mula-mula disimulasikan, dan bilangan sampel berlebihan dan simbol pemerhatian yang diperlukan ditakrifkan oleh nilai jitter yang masing-masing memberikan nilai teori BER. Selain itu, prestasi kadar ralat bit di bawah keadaan persekitaran yang pudar di mana pengecilan tahap isyarat turun naik dengan lebih cepat daripada dalam persekitaran hingar dikira, dan ditunjukkan bahawa kaedah yang dicadangkan membolehkan carian tepat untuk pemasaan penyegerakan optimum yang disebabkan oleh tergelincir kitaran walaupun tahap isyarat agak rendah, dan membolehkan satu telefon bimbit diguna pakai jam sistem untuk beberapa sistem.
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Salinan
Ryo SAWAI, Hiroshi HARADA, Hiroshi SHIRAI, Masayuki FUJISE, "An Adaptive Symbol Timing Synchronization Method for Multi-Mode & Multi-Service Software Radio Communications System" in IEICE TRANSACTIONS on Communications,
vol. E84-B, no. 7, pp. 1885-1896, July 2001, doi: .
Abstract: A symbol timing synchronization method is proposed for the realization of a multi-mode and multi-service software radio receiver. The method enables an accurate search for the optimum symbol timing without any redundant hardware such as sampling rate conversion devices, when the system clock is non-integer times for the target systems' symbol rates. Accordingly, a multimode and multi-service receiver can set an arbitrary system clock for the target systems' symbol rates, and the number of A/D converters can be reduced to the minimum. Also, it may lead to a reduction of the implementation time for digital signal processing hardware, and reduce the burden on the memory in a multi-mode and multi-service software radio receiver, since no sampling rate conversion is needed. The effectiveness of the proposed method for use with a multi-mode and multi-service software radio receiver for future ITS services, which are GPS (Global Positioning System), ETC (Electric Toll Collection system), and Japanese PHS (Personal Handy-phone System) is assumed, and the supposed system is evaluated by computer simulation. The jitter performance under an AWGN (Additive White Gaussian Noise) environment is first simulated, and the necessary number of over-samples and observation symbols are defined by the value of jitter which gives a theoretical value of the BER, respectively. Moreover, the bit error rate performance under a fading environment condition where the attenuation of a signal level fluctuates more rapidly than in a noise environment is calculated, and it is shown that the proposed method enables an accurate search for the optimum synchronization timing caused by a cycle slip even if the signal level is quite low, and allows one handset to adopt a system clock for several systems.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e84-b_7_1885/_p
Salinan
@ARTICLE{e84-b_7_1885,
author={Ryo SAWAI, Hiroshi HARADA, Hiroshi SHIRAI, Masayuki FUJISE, },
journal={IEICE TRANSACTIONS on Communications},
title={An Adaptive Symbol Timing Synchronization Method for Multi-Mode & Multi-Service Software Radio Communications System},
year={2001},
volume={E84-B},
number={7},
pages={1885-1896},
abstract={A symbol timing synchronization method is proposed for the realization of a multi-mode and multi-service software radio receiver. The method enables an accurate search for the optimum symbol timing without any redundant hardware such as sampling rate conversion devices, when the system clock is non-integer times for the target systems' symbol rates. Accordingly, a multimode and multi-service receiver can set an arbitrary system clock for the target systems' symbol rates, and the number of A/D converters can be reduced to the minimum. Also, it may lead to a reduction of the implementation time for digital signal processing hardware, and reduce the burden on the memory in a multi-mode and multi-service software radio receiver, since no sampling rate conversion is needed. The effectiveness of the proposed method for use with a multi-mode and multi-service software radio receiver for future ITS services, which are GPS (Global Positioning System), ETC (Electric Toll Collection system), and Japanese PHS (Personal Handy-phone System) is assumed, and the supposed system is evaluated by computer simulation. The jitter performance under an AWGN (Additive White Gaussian Noise) environment is first simulated, and the necessary number of over-samples and observation symbols are defined by the value of jitter which gives a theoretical value of the BER, respectively. Moreover, the bit error rate performance under a fading environment condition where the attenuation of a signal level fluctuates more rapidly than in a noise environment is calculated, and it is shown that the proposed method enables an accurate search for the optimum synchronization timing caused by a cycle slip even if the signal level is quite low, and allows one handset to adopt a system clock for several systems.},
keywords={},
doi={},
ISSN={},
month={July},}
Salinan
TY - JOUR
TI - An Adaptive Symbol Timing Synchronization Method for Multi-Mode & Multi-Service Software Radio Communications System
T2 - IEICE TRANSACTIONS on Communications
SP - 1885
EP - 1896
AU - Ryo SAWAI
AU - Hiroshi HARADA
AU - Hiroshi SHIRAI
AU - Masayuki FUJISE
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E84-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2001
AB - A symbol timing synchronization method is proposed for the realization of a multi-mode and multi-service software radio receiver. The method enables an accurate search for the optimum symbol timing without any redundant hardware such as sampling rate conversion devices, when the system clock is non-integer times for the target systems' symbol rates. Accordingly, a multimode and multi-service receiver can set an arbitrary system clock for the target systems' symbol rates, and the number of A/D converters can be reduced to the minimum. Also, it may lead to a reduction of the implementation time for digital signal processing hardware, and reduce the burden on the memory in a multi-mode and multi-service software radio receiver, since no sampling rate conversion is needed. The effectiveness of the proposed method for use with a multi-mode and multi-service software radio receiver for future ITS services, which are GPS (Global Positioning System), ETC (Electric Toll Collection system), and Japanese PHS (Personal Handy-phone System) is assumed, and the supposed system is evaluated by computer simulation. The jitter performance under an AWGN (Additive White Gaussian Noise) environment is first simulated, and the necessary number of over-samples and observation symbols are defined by the value of jitter which gives a theoretical value of the BER, respectively. Moreover, the bit error rate performance under a fading environment condition where the attenuation of a signal level fluctuates more rapidly than in a noise environment is calculated, and it is shown that the proposed method enables an accurate search for the optimum synchronization timing caused by a cycle slip even if the signal level is quite low, and allows one handset to adopt a system clock for several systems.
ER -