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
Akses spektrum dinamik telah menjadi isu fokus baru-baru ini, di mana mengenal pasti spektrum yang tersedia memainkan peranan yang agak penting. Banyak kerja telah dilakukan berkaitan pengguna sekunder (SU) mengakses rangkaian pengguna utama (PU) secara serentak. Walau bagaimanapun, di satu pihak, SU mungkin tidak tahu tentang protokol komunikasi PU; sebaliknya, ada kemungkinan bahawa komunikasi antara PU tidak berdasarkan skema segerak sama sekali. Untuk menangani masalah sedemikian, kertas kerja ini memajukan strategi untuk SU mencari spektrum yang tersedia dengan penderiaan lapisan MAC tak segerak. Dengan kaedah ini, SU tidak perlu mengetahui mekanisme komunikasi dalam rangkaian PU apabila mengakses secara dinamik. Kami akan menumpukan pada empat aspek: 1) strategi untuk mencari saluran yang tersedia; 2) mengosongkan strategi apabila PU kembali; 3) anggaran parameter saluran; 4) kesan gangguan SU terhadap kadar data PU. Simulasi menunjukkan bahawa strategi carian kami bukan sahaja boleh mencapai hampir 50% kurang kebarangkalian gangguan daripada peruntukan yang sama bagi jumlah masa carian, tetapi juga menyesuaikan dengan baik kepada saluran yang berbeza-beza masa. Selain itu, akses melalui strategi kami boleh mencapai 150% lebih masa akses daripada akses rawak. Penganggar pemadanan momen menunjukkan prestasi yang baik dalam menganggar dan menjejaki saluran yang berbeza-beza masa.
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Salinan
Chunxiao JIANG, Xin MA, Canfeng CHEN, Jian MA, Yong REN, "On Searching Available Channels with Asynchronous MAC-Layer Spectrum Sensing" in IEICE TRANSACTIONS on Communications,
vol. E93-B, no. 8, pp. 2113-2125, August 2010, doi: 10.1587/transcom.E93.B.2113.
Abstract: Dynamic spectrum access has become a focal issue recently, in which identifying the available spectrum plays a rather important role. Lots of work has been done concerning secondary user (SU) synchronously accessing primary user's (PU's) network. However, on one hand, SU may have no idea about PU's communication protocols; on the other, it is possible that communications among PU are not based on synchronous scheme at all. In order to address such problems, this paper advances a strategy for SU to search available spectrums with asynchronous MAC-layer sensing. With this method, SUs need not know the communication mechanisms in PU's network when dynamically accessing. We will focus on four aspects: 1) strategy for searching available channels; 2) vacating strategy when PUs come back; 3) estimation of channel parameters; 4) impact of SUs' interference on PU's data rate. The simulations show that our search strategy not only can achieve nearly 50% less interference probability than equal allocation of total search time, but also well adapts to time-varying channels. Moreover, access by our strategies can attain 150% more access time than random access. The moment matching estimator shows good performance in estimating and tracing time-varying channels.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E93.B.2113/_p
Salinan
@ARTICLE{e93-b_8_2113,
author={Chunxiao JIANG, Xin MA, Canfeng CHEN, Jian MA, Yong REN, },
journal={IEICE TRANSACTIONS on Communications},
title={On Searching Available Channels with Asynchronous MAC-Layer Spectrum Sensing},
year={2010},
volume={E93-B},
number={8},
pages={2113-2125},
abstract={Dynamic spectrum access has become a focal issue recently, in which identifying the available spectrum plays a rather important role. Lots of work has been done concerning secondary user (SU) synchronously accessing primary user's (PU's) network. However, on one hand, SU may have no idea about PU's communication protocols; on the other, it is possible that communications among PU are not based on synchronous scheme at all. In order to address such problems, this paper advances a strategy for SU to search available spectrums with asynchronous MAC-layer sensing. With this method, SUs need not know the communication mechanisms in PU's network when dynamically accessing. We will focus on four aspects: 1) strategy for searching available channels; 2) vacating strategy when PUs come back; 3) estimation of channel parameters; 4) impact of SUs' interference on PU's data rate. The simulations show that our search strategy not only can achieve nearly 50% less interference probability than equal allocation of total search time, but also well adapts to time-varying channels. Moreover, access by our strategies can attain 150% more access time than random access. The moment matching estimator shows good performance in estimating and tracing time-varying channels.},
keywords={},
doi={10.1587/transcom.E93.B.2113},
ISSN={1745-1345},
month={August},}
Salinan
TY - JOUR
TI - On Searching Available Channels with Asynchronous MAC-Layer Spectrum Sensing
T2 - IEICE TRANSACTIONS on Communications
SP - 2113
EP - 2125
AU - Chunxiao JIANG
AU - Xin MA
AU - Canfeng CHEN
AU - Jian MA
AU - Yong REN
PY - 2010
DO - 10.1587/transcom.E93.B.2113
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E93-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2010
AB - Dynamic spectrum access has become a focal issue recently, in which identifying the available spectrum plays a rather important role. Lots of work has been done concerning secondary user (SU) synchronously accessing primary user's (PU's) network. However, on one hand, SU may have no idea about PU's communication protocols; on the other, it is possible that communications among PU are not based on synchronous scheme at all. In order to address such problems, this paper advances a strategy for SU to search available spectrums with asynchronous MAC-layer sensing. With this method, SUs need not know the communication mechanisms in PU's network when dynamically accessing. We will focus on four aspects: 1) strategy for searching available channels; 2) vacating strategy when PUs come back; 3) estimation of channel parameters; 4) impact of SUs' interference on PU's data rate. The simulations show that our search strategy not only can achieve nearly 50% less interference probability than equal allocation of total search time, but also well adapts to time-varying channels. Moreover, access by our strategies can attain 150% more access time than random access. The moment matching estimator shows good performance in estimating and tracing time-varying channels.
ER -