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內容簡介

　　在萬物互聯(lián)時代，頻譜資源會越來越緊張。將蜂窩通信擴展到免授權頻段是緩解當前頻譜資源短缺問題的一個重要手段。本書系統(tǒng)地闡述免授權頻譜共享原理與技術，共7 章。第1 章為緒論，介紹免授權頻譜共享的提出及免授權頻譜共享方案等。第2 章介紹免授權頻譜共享方案LTE-LAA 在理想情況、捕獲效應及不完美頻譜探測下的性能。第3 章介紹LTE-LAA 方案的智能優(yōu)化，分別介紹基于混沌Q 學習的CWS 選擇算法及基于Q 學習的能量閾值優(yōu)化算法。第4 章介紹D2D 通信下的免授權頻譜共享方法，分別介紹基于多智能體深度強化學習的D2D通信資源聯(lián)合分配算法和基于DDQN 的D2D 直接接入免授權頻譜算法。第5 章介紹基于無人機平臺的免授權頻譜共享方法，分別介紹基于混合頻譜共享的軌跡優(yōu)化和資源分配算法，以及基于全頻譜共享的軌跡和功率優(yōu)化算法。第6 章介紹基于AI 的免授權頻譜共享方法，分別介紹人工智能技術、基于深度Q 學習的免授權頻譜接入算法及基于平均場近似的免授權頻譜接入算法。第7 章是總結與展望。

作者簡介

　　裴二榮，男，工學博士，重慶郵電大學通信與信息工程學院教授，碩導/博導，2012年畢業(yè)于電子科技大學，重慶大學博士后流動站出站，英國謝菲爾德大學訪問學者，重慶郵電大學智能互聯(lián)與先進仿真創(chuàng)新團隊負責人，中國電子學會高級會員，中國通信學會高級會員，中國通信學會第四、五屆通信軟件技術專業(yè)委員會委員，國家超高清視頻創(chuàng)新中心外聘專家，長期從事無線移動通信技術相關研究工作，先后承擔國家自然科學基金、國家863、新一代移動通信網國家重大專項、省部級重大重點等多項項目，發(fā)表高質量論文近50篇，申請并授權國家發(fā)明專利近50個，獲省部級獎勵1項。

圖書目錄

第1 章緒論····································································································1
1.1 無線電頻譜························································································1
1.2 靜態(tài)的頻譜管理··················································································2
1.3 免授權頻譜共享的提出·······································································3
1.4 免授權頻段現(xiàn)有用戶WiFi 系統(tǒng)···························································5
1.5 免授權頻譜共享方案···········································································6
1.5.1 LWA···························································································8
1.5.2 LWIP ··························································································8
1.5.3 MulteFire······················································································8
1.5.4 LTE-U·························································································9
1.5.5 LTE-LAA··················································································.10
1.5.6 LTE-eLAA·················································································.12
1.5.7 5G NR-U···················································································.13
參考文獻·································································································.14
第2 章 LTE-LAA 方案的相關性能分析························································.16
2.1 引言································································································.16
2.2 LTE-LAA 方案的性能分析·······························································.17
2.2.1 系統(tǒng)模型···················································································.17
2.2.2 LTE-LAA 方案···········································································.18
2.2.3 數(shù)學建模···················································································.20
2.2.4 退避機制···················································································.24
2.2.5 目標參數(shù)分析·············································································.26
2.2.6 仿真結果與性能分析····································································.28
2.2.7 本節(jié)小結···················································································.36
2.3 捕獲效應下的LTE-LAA 性能分析···················································.37
2.3.1 系統(tǒng)模型···················································································.37
2.3.2 LTE-LAA 方案和WiFi DCF 機制····················································.39
2.3.3 捕獲模型···················································································.40
2.3.4 數(shù)學建?！ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ?43
2.3.5 仿真結果與性能分析····································································.49
2.3.6 本節(jié)小結···················································································.58
2.4 不完美頻譜探測下的LTE-LAA 性能分析·········································.58
2.4.1 網絡模型···················································································.59
2.4.2 WiFi DCF 機制和LBT 機制···························································.59
2.4.3 不完美頻譜探測下的LTE-LAA 共存性能研究···································.60
2.4.4 仿真結果與性能分析····································································.69
2.4.5 本節(jié)小結···················································································.79
2.5 本章總結·························································································.79
參考文獻·································································································.80
第3 章 LTE-LAA 方案的智能優(yōu)化·······························································.82
3.1 引言································································································.82
3.2 Q 學習算法······················································································.83
3.2.1 Q 學習算法理論··········································································.83
3.2.2 智能體動作選擇策略····································································.84
3.3 基于混沌Q 學習的CWS 選擇算法······················