There are two basic principles used in wireless network coding to design throughput-efficient schemes: (1) aggregation of communication flows and (2) interference is embraced and subsequently cancelled or mitigated. These principles inspire design of many novel multi-flow transmission (MFT) schemes. Such are the Coordinated Direct/Relay (CDR) schemes, where each basic transmission involves two flows to a direct and a relayed user. Usage of MFT schemes as building blocks of more complex transmission schemes essentially changes the problem of scheduling, since some of the flows to be scheduled are coupled in a signal domain and they need to he assigned a communication resource simultaneously. In this paper we define a novel framework that can he used to analyze MFT schemes and assess the system-level gains. The framework is based on cellular wireless users with two-way traffic and it sets the basis for devising composite time-multiplexed MFT schemes, tailored to particular optimization criteria. Those criteria can he formulated by adapting well-known schedulers in order to incorporate MFT schemes. The results show rate advantages brought by the CDR schemes in pertinent scenarios. Another key contribution is the proposed framework, which can he used to evaluate any future multi-flow transmission scheme.
机构:
Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
Chen, Wei
;
Letaief, Khaled B.
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Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R ChinaTsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
Letaief, Khaled B.
;
Cao, Zhigang
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Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
机构:
Mobile Commun Technol Res Lab, Standardizat & Syst Res Grp 4G, Anyang 431749, Kyungki Do, South KoreaMobile Commun Technol Res Lab, Standardizat & Syst Res Grp 4G, Anyang 431749, Kyungki Do, South Korea
Cho, Hangyu
;
Andrews, Jeffrey G.
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Univ Texas Austin, Dept Elect & Comp Engn, Wireless Networking & Commun Grp, Austin, TX 78712 USAMobile Commun Technol Res Lab, Standardizat & Syst Res Grp 4G, Anyang 431749, Kyungki Do, South Korea
机构:
Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
Chen, Wei
;
Letaief, Khaled B.
论文数: 0引用数: 0
h-index: 0
机构:
Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R ChinaTsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
Letaief, Khaled B.
;
Cao, Zhigang
论文数: 0引用数: 0
h-index: 0
机构:
Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
机构:
Mobile Commun Technol Res Lab, Standardizat & Syst Res Grp 4G, Anyang 431749, Kyungki Do, South KoreaMobile Commun Technol Res Lab, Standardizat & Syst Res Grp 4G, Anyang 431749, Kyungki Do, South Korea
Cho, Hangyu
;
Andrews, Jeffrey G.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Texas Austin, Dept Elect & Comp Engn, Wireless Networking & Commun Grp, Austin, TX 78712 USAMobile Commun Technol Res Lab, Standardizat & Syst Res Grp 4G, Anyang 431749, Kyungki Do, South Korea