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Diversity and MIMO for efficient front-end design of body-centric wireless communications devices

Diversity and MIMO for efficient front-end design of body-centric wireless communications devices

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The advancement of intelligent, small sensors, microelectronics, integrated circuit, and low power wireless communication has led us close to the deployment of body area networks (BANs). There is considerable ongoing research on antennas and propagation for BANs. Diversity and Multiple Input Multiple Output (MIMO) are the two well-known multiple antenna techniques to overcome fading and provide channel capacity improvement. In this chapter, we discuss the use of antenna diversity and MIMO for on-body channels to support reliable and high data rate communication. Diversity is also used to cancel the co-channel interference from a nearby BAN device. Probabilistic channel models of diversity and MIMO on-body channels are proposed and validated by measurements.

Chapter Contents:

  • Abstract
  • 8.1 Introduction
  • 8.2 Receive diversity for body-worn devices
  • 8.2.1 Diversity performance analysis
  • 8.2.2 Diversity channel characterization and spectral analysis
  • 8.2.2.1 Channel characterization and modelling
  • 8.2.2.2 Spectral analysis
  • 8.2.3 Diversity for interference cancellation
  • 8.2.3.1 Systems model
  • 8.2.3.2 Interference cancellation performance analysis
  • 8.3 MIMO channels and capacity of on-body channels
  • 8.3.1 MIMO channel model
  • 8.3.2 MIMO for channel capacity
  • 8.3.3 Transmit-receive diversity with MIMO
  • 8.3.4 MIMO stochastic channel modelling
  • 8.3.4.1 Simulation results
  • 8.4 Summary
  • References

Inspec keywords: probability; antennas; wireless channels; MIMO communication; body area networks

Other keywords: multiple antenna techniques; low power wireless communication; body centric wireless communications devices; integrated circuit; BAN; body area networks; microelectronics; antenna diversity; multiple input multiple output; probabilistic channel models; MIMO; small sensors; front end design

Subjects: Biomedical communication; Single antennas; Radio links and equipment; Other topics in statistics

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