Energy-efficient multihop cooperative MISO transmission with optimal hop distance in wireless ad hoc networks

Jun Zhang, Li Fei, Qiang Gao, Xiao-Hong Peng

Research output: Contribution to journalArticle

Abstract

In this paper, we investigate the hop distance optimization problem in ad hoc networks where cooperative multiinput- single-output (MISO) is adopted to improve the energy efficiency of the network. We first establish the energy model of multihop cooperative MISO transmission. Based on the model, the energy consumption per bit of the network with high node density is minimized numerically by finding an optimal hop distance, and, to get the global minimum energy consumption, both hop distance and the number of cooperating nodes around each relay node for multihop transmission are jointly optimized. We also compare the performance between multihop cooperative MISO transmission and single-input-single-output (SISO) transmission, under the same network condition (high node density). We show that cooperative MISO transmission could be energyinefficient compared with SISO transmission when the path-loss exponent becomes high. We then extend our investigation to the networks with varied node densities and show the effectiveness of the joint optimization method in this scenario using simulation results. It is shown that the optimal results depend on network conditions such as node density and path-loss exponent, and the simulation results are closely matched to those obtained using the numerical models for high node density cases.
Original languageEnglish
Pages (from-to)3426-3435
Number of pages10
JournalIEEE Transactions on Wireless Communications
Volume10
Issue number10
Early online date22 Aug 2011
DOIs
Publication statusPublished - Oct 2011

Fingerprint

Wireless Ad Hoc Networks
Wireless ad hoc networks
Multi-hop
Energy Efficient
Output
Vertex of a graph
Path Loss
Energy utilization
Energy Consumption
Exponent
Ad hoc networks
Energy Model
Global Minimum
Ad Hoc Networks
Numerical models
Relay
Optimization Methods
Scenarios
Simulation

Bibliographical note

© 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keywords

  • cooperative MISO
  • energy efficiency
  • hop distance
  • wireless ad hoc networks

Cite this

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abstract = "In this paper, we investigate the hop distance optimization problem in ad hoc networks where cooperative multiinput- single-output (MISO) is adopted to improve the energy efficiency of the network. We first establish the energy model of multihop cooperative MISO transmission. Based on the model, the energy consumption per bit of the network with high node density is minimized numerically by finding an optimal hop distance, and, to get the global minimum energy consumption, both hop distance and the number of cooperating nodes around each relay node for multihop transmission are jointly optimized. We also compare the performance between multihop cooperative MISO transmission and single-input-single-output (SISO) transmission, under the same network condition (high node density). We show that cooperative MISO transmission could be energyinefficient compared with SISO transmission when the path-loss exponent becomes high. We then extend our investigation to the networks with varied node densities and show the effectiveness of the joint optimization method in this scenario using simulation results. It is shown that the optimal results depend on network conditions such as node density and path-loss exponent, and the simulation results are closely matched to those obtained using the numerical models for high node density cases.",
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Energy-efficient multihop cooperative MISO transmission with optimal hop distance in wireless ad hoc networks. / Zhang, Jun; Fei, Li; Gao, Qiang; Peng, Xiao-Hong.

In: IEEE Transactions on Wireless Communications, Vol. 10, No. 10, 10.2011, p. 3426-3435.

Research output: Contribution to journalArticle

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