전력 및 대역폭 효율성있는 무선센서네트워크협력 전송에 관한 연구
Power-and-Bandwidth Efficient Cooperative Transmission Protocol in Wireless Sensor Networks
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
본 논문에서 먼저 LEACH (Low-Energy Adaptive Hierarchy)를 사용한 무선센서네트워크에서 하나의 센서 노드가 다른 두 센서노드의 클러스터 헤드를 향한 데이터 전송을 도와주는 전력 및 대역폭에 효율성있는 협력 통신 프로토콜을 제안하고, 제안한 프로토콜의 closed-form BER(Bit Error Ratio)을 유도한다. 또한 이것이 복호 후 전송 프로토콜의 일반적인 BER 임을 보이고, 제안한 시스템이 기존의 복호 후 전송 프로토콜보다 더 높은 주파수 효율을 가지면서 동일한 성능을 나타내는 것을 보인다. 많은 수학적인 결과를 통해 직접 전송일 경우 BER이 10-3에서 11dB까지 네트워크의 전력이 절약되는 것을 확인할 수 있다.
Abstract
In this paper, we first propose a power-and-bandwidth efficient cooperative transmission protocol where a sensor node assists two others for their data transmission to a clusterhead in WSNs (Wireless Sensor Networks) using LEACH (Low-Energy Adaptive Clustering Hierarchy). Then we derive its closed-form BER expression which is also a general BER one for the decode-and-forward protocol (DF) and prove that the proposed protocol performs the same as the conventional DF but obtains higher spectral efficiency. A variety of numerical results reveal the cooperation can save the network power up to 11dB over direct transmission at BER of 10-3.
참고문헌 (16)
- "A survey on sensor networks", 40(8), pp.102~114 (2002)
- "Energy-Efficient Communication Protocol for Wireless Microsensor Networks", pp.1~10 (2000)
- "Symbol Error Probabilities for General Cooperative Links", 4(3), pp.1264~1273 (2005)
- "Super-orthogonal space-time trellis coded cooperative diversity systems", 4, pp.2429~2433 (2004)
- "Coded cooperation in wireless communications:space- time transmission and iterative decoding", 52(2), pp.362~371 (2004)
- "A Coded Modulation Technique for Cooperative Diversity in Wireless Networks", 3, pp.525~528 (2005)
- "Hybrid turbo FEC", ARQ systems and distributed space- time coding for cooperative transmission in the downlink, 2004, pp.1, 380~384
- "Energy efficient wireless sensor networks with transmission diversity", 39, pp.1753~1755 (2003)
- "Cooperative diversity in wireless networks:Efficient protocols and outage behavior", 50(12), pp.3062~3080 (2004)
- "User cooperation diversity. Part I-II", 51(11), pp.1927~1948 (2003)
- "A Simple Cooperative Extension to Wireless Relaying" (2004), Zurich Seminar on Communications
- "On the Performance of Cooperative Relaying in Wireless Networks", 16(1), pp.5~16 (2005)
- "Outage minimization and optimal power control for the fading relay channel", pp.458~462 (2004)
- "Probability, Random Variables and Stochastic Process" (2002), McGraw Hill
- "Table of Integrals, Series, and Products" (2000), Academic Press
- "New exponential bounds and approximations for the computation of error probability in fading channels", 2(4), pp.840~845 (2003)