Resource Allocation for Cooperative and Wireless Powered Communication Networks :

Thinh Phu Do

추천

검색

자료유형: 학위논문

저자정보: Thinh Phu Do (경희대학교, 경희대학교 대학원)

지도교수: Yun Hee Kim

발행연도: 2016

저작권: 경희대학교 논문은 저작권에 의해 보호받습니다.

이용수0

이 논문의 연구 히스토리 (2)

2016

Proportional Fair Resource Allocation for a Full-Duplex Wireless Powered Communication Network

Thinh Phu Do , Ge , a 외 3명 한국통신학회 학술대회논문집 2016.06 학술대회자료

Resource Allocation for Cooperative and Wireless Powered Communication Networks

Thinh Phu Do 전자·전파공학과 2016.01 학위논문

이 논문의 후속연구가 궁금하신가요?
연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
이 논문의 연구 히스토리 확인하기

초록· 키워드

오류제보하기

A new paradigm in communications referred to as Internet of Things (IoT) has
emerged to connect everything including devices, humans, environments, processors, and
data for autonomous transmission of sensed data and control information. Various IoT
services are now being emerging to realize smart homes and cities as well as to reduce
the cost in business so that the number of IoT devices are expected to increase up to
50 billions by 2030. In supporting such various IoT services, wireless communications
should be reshaped and redesigned to satisfy diverse requirements such as low-latency and
high reliability for critical communications, large coverage and massive connectivity for
scattered sensing devices, energy efficiency for battery life extension for embedded devices.
This thesis envisages cooperative communications and wireless powered communications
as enabling technologies meeting such IoT requirements as high reliability at the
extended coverage, energy efficiency, and battery life extension. Cooperative communications
exploit neighboring nodes to create diversity channels robust to fading as well as to
replace a long-distant channel by multiple short-distant channels for the significant reduction
in a propagation loss. Wireless powered communications charge the devices through
radio-frequency signals remotely to extend their battery lifetime before communications,
which avoids frequent replacements of devices placed in the hazardous and vast areas.
On the other hand, the coexistence of overwhelmingly massive devices motivates a
more efficient utilization of limited wireless resources in time, power, and frequency. It
is thus necessary to design efficient resource allocation algorithms to boost the overall
system performance. In this thesis, we tackle several resource allocation problems for
cooperative communications and wireless powered communications systems to meet the
quality-of-services.
We begin with optimizing a multi-hop one-way relaying network to support a long
range transmission from a source node to a destination node with the help of relay nodes.
For the network, we develop several optimization schemes in power allocation (PA) and
relay position (RP) to minimize the outage probability in a generalized fading channel
models. The analysis on the optimization schemes reveal that the optimization of PA
improves only the coding gain while the optimization of RP improves not only the coding
gain but also the diversity order. In addition, the joint optimization of PA and RP leads
to a significant improvement in the overall outage performance.
Next, resource allocation problems are studied for a two-way relaying (TWR) network
which adopts physical layer network coding for efficient spectrum utilization. The TWR
network allows two source nodes to exchange their information with the help of a relay
node in two time slots rather than in four time slots required for conventional OWR. We
attempt to optimize PA and time allocation (TA) in two time slots in a way of minimizing
the outage probability in supporting asymmetric rates of the two sources. The analysis
shows that the optimizing PA is beneficial for any rate configuration while the optimizing
TA is beneficial for highly asymmetric rate transmission.
We then introduce wireless power communication into the TWR network such that
the relay not only decodes the information but also harvests the energy from the signal
transmitted by the sources in the first slot. To realize both information transmission and
energy harvesting at relay, we adopt two common energy harvesting architectures of power
splitting (PS) and time switching (TS) in simultaneous wireless information and power
transfer (SWIPT). For each architecture, we design a resource allocation of optimizing the
PS ratio for the PS-SWIPT and the TS ratio for the TS-SWIPT as well as optimizing the
TA of the two time phases of the TWR network.
Finally, we investigate a full-duplex wireless powered communication network such
that a hybrid access point charges the devices in the downlink while the devices utilize
the harvested energy to transmit their signal in the uplink. For the network, we design
a resource allocation of PA for the downlink wireless power transfer and TA for both
the downlink wireless power transfer and the uplink information transfer to maximize the
system sum throughput. Although the conventional study ignores the self-interference in
full-duplex mode, we assume imperfect self-interference cancelation in resource allocation
with energy causality which is a more practical scenario. The problem is highly non-convex
but is approximated to a second-order cone problem for the fast and reliable computation

List of Figures v
Abbreviations viii
1 Introduction 1
1.1 Motivations and Previous Works . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1.1 Cooperative Communication . . . . . . . . . . . . . . . . . . . . . . 3
1.1.2 Wireless Powered Networks . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Contributions and Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Optimization of Power Allocation and Relay Position in Multi-Hop Re-
lay Networks 7
2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Multi-hop AF Relaying in Generalized Fading . . . . . . . . . . . . . . . . . 10
2.2.1 System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.2 Performance Metrics . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3 System Optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3.1 Joint Optimization of PA and RP . . . . . . . . . . . . . . . . . . . 14
2.3.2 Optimization of PA for Fixed RP . . . . . . . . . . . . . . . . . . . . 17
2.3.3 Optimization of RP for Fixed PA . . . . . . . . . . . . . . . . . . . . 18
2.4 Asymptotic Optimized Performance . . . . . . . . . . . . . . . . . . . . . . 19
2.4.1 Coding Gain and Diversity Order in General Fading Models . . . . . 20
i
2.4.2 Optimization Gains in Specific Fading Models . . . . . . . . . . . . . 23
2.5 Performance Evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.6 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3 Outage-Optimal Resource Allocation for Two-Way Relaying 33
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.2 System Model and Performance Metric . . . . . . . . . . . . . . . . . . . . . 37
3.2.1 System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.2.2 Performance Metric . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.3 Resource Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.3.1 Joint Optimization of PA and TA (OPA-OTA) . . . . . . . . . . . . 40
3.3.2 OPA with Suboptimal Two-Level TA (OPA-S2TA) . . . . . . . . . . 42
3.3.3 OPA with Suboptimal One-Level TA (OPA-S1TA) . . . . . . . . . . 44
3.3.4 OPA with Equal TA (OPA-ETA) . . . . . . . . . . . . . . . . . . . . 44
3.3.5 Equal PA and Equal TA (EPA-ETA) . . . . . . . . . . . . . . . . . . 45
3.4 Outage Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
3.4.1 OPA-OTA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
3.4.2 OPA-S2TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3.4.3 OPA-S1TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
3.4.4 OPA-ETA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
3.4.5 EPA-ETA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
3.5 Asymptotic Outage Performance . . . . . . . . . . . . . . . . . . . . . . . . 49
3.5.1 OPA-OTA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
3.5.2 OPA-S2TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
3.5.3 OPA-S1TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
3.5.4 OPA-ETA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
3.5.5 EPA-ETA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3.6 SNR Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3.7 Performance Evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
ii
3.8 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
4 Simultaneous Wireless Transfer of Power and Information in Two-Way
Relaying Network 63
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
4.2 System Model and Performance Metric . . . . . . . . . . . . . . . . . . . . . 67
4.2.1 DF-TWR with PS-SWIPT . . . . . . . . . . . . . . . . . . . . . . . 67
4.2.2 DF-TWR with TS-SWIPT . . . . . . . . . . . . . . . . . . . . . . . 68
4.2.3 Performance Metric . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
4.3 Resource Allocation for PS-SWIPT . . . . . . . . . . . . . . . . . . . . . . . 70
4.3.1 Optimal PS with optimal TP (OPS/OTP) . . . . . . . . . . . . . . 71
4.3.2 Optimal PS with Suboptimal TP Type I (OPS/STP-I) . . . . . . . 73
4.3.3 Optimal PS with Suboptimal TP Type II (OPS/STP-II) . . . . . . 75
4.3.4 Other Suboptimal Schemes . . . . . . . . . . . . . . . . . . . . . . . 76
4.4 Resource Allocation for TS-SWIPT . . . . . . . . . . . . . . . . . . . . . . . 77
4.4.1 Optimal TS and TP (OTSTP) . . . . . . . . . . . . . . . . . . . . . 78
4.4.2 Suboptimal TS and TP Type I (STSTP-I) . . . . . . . . . . . . . . . 80
4.4.3 Suboptimal TS and TP Type II (STSTP-II) . . . . . . . . . . . . . . 81
4.4.4 Equal TS and TP (ETSTP) . . . . . . . . . . . . . . . . . . . . . . . 82
4.5 Numerical Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
4.6 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
5 Resource Allocation in Full-Duplex Wireless-Powered Communication
Network 91
5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
5.2 System Model and Problem Formulation . . . . . . . . . . . . . . . . . . . . 93
5.3 Proposed Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
5.3.1 Joint PA and TA Optimization . . . . . . . . . . . . . . . . . . . . . 95
5.3.2 PA Optimization for Equal TA . . . . . . . . . . . . . . . . . . . . . 98
iii
5.3.3 TA Optimization with Equal PA . . . . . . . . . . . . . . . . . . . . 100
5.4 Simulation Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
5.5 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
6 Concluding Remarks and Future Works 104
A Proofs for Chapter 2. Optimization of Power Allocation and Relay Po-
sition in Multi-Hop Relay Networks 106
A.1 Proof of Theorem 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
A.2 Proof of Theorem 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
A.3 Proof of Theorem 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
B Proofs for Chapter 3. Outage-Optimal Resource Allocation for Two-
Way Relaying 109
B.1 Derivation of OPA P?
(δ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
B.2 Proof of Λoo ≤ U1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
B.3 Explicit Expressions of (3.41) and (3.42) . . . . . . . . . . . . . . . . . . . . 112
B.4 Derivation of (3.51) and (3.52) . . . . . . . . . . . . . . . . . . . . . . . . . 113
B.5 Proof of (3.63) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
B.6 Closed-Form Expressions for π12 and π21 . . . . . . . . . . . . . . . . . . . . 115
B.7 Asymptotic Performance of FL(δ1,δ2)(1) . . . . . . . . . . . . . . . . . . . . . 115
C Proofs for Chapter 4. Simultaneous Wireless Transfer of Power and
Information in Two-Way Relaying Network 117
C.1 Derivation of Gλ1,λ2(x;α, β) . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
C.2 Derivation of Kλ1,λ2(x;α, β) . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Bibliography 137

최근 본 자료

전체보기

구분	그룹	데이터 항목
AI 학습용 데이터	원문	원문 PDF 파일
AI 학습용 데이터	원문 + 메타 (기본/상세)	원문 PDF 파일 및 서지정보 CSV
대량 구매용 데이터	B2B 구독 방식	특정 자료 한정으로 원문 접근 권한 부여
대량 구매용 데이터	URL 전달 방식	바로 PDF 뷰어를 열람할 수 있는 URL 제공

구분	그룹	데이터 항목
AI 학습용 데이터	기본 메타	발행기관명, 간행물명, 권호명, 권(vol), 호(issue), 통권, 발행연도, 발행월, 논문명, 저자명, 시작페이지, 종료페이지, 전체페이지, 상세페이지URL
상세 메타 데이터	발행기관 메타	발행기관 이명, 영문명, 창립연도, 홈페이지URL, 발행기관 소개
	간행물 메타	부제목, 간행물 유형, ISSN, ISBN, 최초발행연도, 폐간연도, 간행빈도, 발행주기, 등재사항, 이용수, 피인용수, 권호수, 논문수, 표지이미지
	논문 메타	작성 언어, 부제목, 대등제목, 목차, 키워드, 초록, 이미지, 참고문헌, 이용수, 피인용수, 논문활용도, DBpia통합주제분류, KDC분류, DDC분류, 한국연구재단분류, UCI, DOI
	저자 메타	소속기관, 소속부서, 직급, 연구분야, 연구키워드, 이용수, 피인용수, 저자 논문활용도

구분	그룹	데이터 항목
※ 결합형/맞춤형 메타 데이터는 신청 내용에 따라 다양하게 제공 가능
이용순위 정보	주제분야별 많이 이용된 논문	“인문학”에서 많이 이용된 논문 TOP100
	이용기관별 많이 이용된 논문	“중고등학교”에서 많이 이용된 논문 TOP100
	세부기관별 많이 이용된 논문	“서울대학교”에서 많이 이용된 논문 TOP100
	키워드별 많이 이용된 논문	“Chat GPT”에서 많이 이용된 논문 TOP100
키워드 정보	많이 이용된 키워드	특정기간/분야/저널 내 많이 이용된 키워드
	많이 발행된 키워드	특정기간/분야/저널 내 많이 발행된 키워드
	많이 검색된 키워드	특정기간/분야/저널 내 많이 검색된 키워드
	연구 트렌드 키워드	특정 키워드 연관 연구동향 분석 데이터 키워드

논문 기본 정보

이 논문의 연구 히스토리 (2)

초록· 키워드

목차

최근 본 자료

댓글(0)