【摘要】：機(jī)會(huì)頻譜接入被認(rèn)為是一種實(shí)現(xiàn)異構(gòu)無(wú)線網(wǎng)絡(luò)間頻譜資源共享的有效途徑之一。之前的相關(guān)研究很少考慮信道質(zhì)量信息對(duì)于機(jī)會(huì)頻譜接入性能的影響。針對(duì)這一問(wèn)題,該文綜合考慮主用戶信道占用信息和次用戶的信道質(zhì)量信息來(lái)設(shè)計(jì)機(jī)會(huì)頻譜接入策略,并通過(guò)求解凸優(yōu)化問(wèn)題獲得了一種基于信道質(zhì)量門限的策略。該策略能夠最大化次用戶獲得的有效吞吐率,同時(shí)滿足主用戶對(duì)傳輸質(zhì)量的要求,且在單信道場(chǎng)景下具有最優(yōu)性。仿真結(jié)果表明:該策略能夠顯著提高次用戶的有效吞吐率。
[Abstract]:Opportunistic spectrum access is considered to be an effective way to realize the sharing of spectrum resources among heterogeneous wireless networks. The previous correlation studies rarely take into account the effect of channel quality information on the opportunity spectrum access performance. In order to solve this problem, this paper designs the opportunity frequency spectrum access strategy based on the primary user channel occupation information and the channel quality information of the secondary user, and obtains a strategy based on the channel quality threshold by solving the convex optimization problem. The strategy can maximize the effective throughput rate obtained by the sub-users while meeting the requirements of the main users for the transmission quality, and has the optimality under the single-channel scene. The simulation results show that the strategy can significantly improve the effective throughput of the secondary users.
【作者單位】： 清華大學(xué)電子工程系 微波與數(shù)字通信技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室 清華信息科學(xué)與技術(shù)國(guó)家實(shí)驗(yàn)室;
【基金】：國(guó)家科技重大專項(xiàng)(2013ZX03001024-004) 國(guó)家“九七三”重點(diǎn)基礎(chǔ)研究項(xiàng)目(2013CB329002) 國(guó)家自然科學(xué)青年基金項(xiàng)目(61201192) 國(guó)家“八六三”高技術(shù)項(xiàng)目(2012AA011402) 清華自主科研項(xiàng)目(2011THZ02-2) 國(guó)家國(guó)際科技合作項(xiàng)目(2012DFG12010) 愛(ài)立信合作項(xiàng)目(20123000059)
【分類號(hào)】：TN92

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