Dynamic Spectrum Control Aided Spectrum Sharing with Nonuniform Sampling-Based Channel Sounding
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- DUONG Quang Thang
- Graduate School of Engineering, Osaka University
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- IBI Shinsuke
- Graduate School of Engineering, Osaka University
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- SAMPEI Seiichi
- Graduate School of Engineering, Osaka University
抄録
This paper studies channel sounding for selfish dynamic spectrum control (S-DSC) in which each link dynamically maps its spectral components onto a necessary amount of discrete frequencies having the highest channel gain of the common system band. In S-DSC, it is compulsory to conduct channel sounding for the entire system band by using a reference signal whose spectral components are sparsely allocated by S-DSC. Using nonuniform sampling theory, this paper exploits the finite impulse response characteristic of frequency selective fading channels to carry out the channel sounding. However, when the number of spectral components is relatively small compared to the number of discrete frequencies of the system band, reliability of the channel sounding deteriorates severely due to the ill-conditioned problem and degradation in channel capacity of the next frame occurs as a result. Aiming at balancing frequency selection diversity effect and reliability of channel sounding, this paper proposes an S-DSC which allocates an appropriate number of spectral components onto discrete frequencies with low predicted channel gain besides mapping the rest onto those with high predicted channel gain. A numerical analysis confirms that the proposed S-DSC gives significant enhancement in channel capacity performance.
収録刊行物
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- IEICE Transactions on Communications
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IEICE Transactions on Communications E96.B (12), 3172-3180, 2013
一般社団法人 電子情報通信学会
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詳細情報 詳細情報について
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- CRID
- 1390282679353472512
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- NII論文ID
- 130003385163
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- ISSN
- 17451345
- 09168516
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可