Article (Scientific journals)
Power Optimization With BLER Constraint for Wireless Fronthauls in C-RAN
Vu, Thang Xuan; Nguyen, Thang Van; Quek, Tony Q.S.
2016In IEEE Communications Letters, 20 (3), p. 602 - 605
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Keywords :
Cloud radio access networks; quality of service; optimization
Abstract :
[en] Cloud radio access network (C-RAN) is a novel architecture for future mobile networks to sustain the exponential traffic growth thanks to the exploitation of centralized processing. In C-RAN, one data processing center or baseband unit (BBU) communicates with users via distributed remote radio heads (RRHs), which are connected to the BBU via high capacity, low latency fronthaul links. In this letter, we study C-RAN with wireless fronthauls due to their flexibility in deployment and management. First, a tight upper bound of the system block error rate (BLER) is derived in closed-form expression via union bound analysis. Based on the derived bound, adaptive transmission schemes are proposed. Particularly, two practical power optimizations based on the BLER and pair-wise error probability (PEP) are proposed to minimize the consumed energy at the RRHs while satisfying the predefined quality of service (QoS) constraint. The premise of the proposed schemes originates from practical scenarios where most applications tolerate a certain QoS, e.g., a nonzero BLER. The effectiveness of the proposed schemes is demonstrated via intensive simulations.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Vu, Thang Xuan  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Nguyen, Thang Van
Quek, Tony Q.S.
External co-authors :
yes
Language :
English
Title :
Power Optimization With BLER Constraint for Wireless Fronthauls in C-RAN
Publication date :
March 2016
Journal title :
IEEE Communications Letters
ISSN :
1089-7798
Publisher :
Institute of Electrical and Electronics Engineers, New York, United States - New York
Volume :
20
Issue :
3
Pages :
602 - 605
Peer reviewed :
Peer Reviewed verified by ORBi
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