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Chapitre D'ouvrage Année : 2009

On Capacity of Multi-Element Dual Polarized Antenna Systems

Résumé

This chapter considers the principles of multiple-input multiple-output (MIMO) wireless communication systems. The pioneering idea of MIMO systems is that multiple transmit antennas are used to combat fading without expanding the bandwidth of the transmitted signal while multiple receive antennas are used to increase the signal-to-noise ratio at the receiver. These systems increase the reliability of system transmission, called diversity gain. However, Many authors proposed the use of multiple antennas at both transmitter and receiver in order to increase the data rate by creating multiple spatial channels. In particular, with N transmitting and N receiving antennas, it is possible to achieve an N-times capacity of single transmitting and single receiving antenna (SISO) systems, multiplexing gain. However, from many experimental campaigns, the MIMO multiplexing and/or diversity gain cannot be effectively achieved because the antenna correlation appears at transmitter or/and receiver sides due to a limited number of physical parameters such as antenna array configuration and propagation channel characteristics. Thus, the use of co-located orthogonally-polarized antennas allows reducing the antenna space and the effective cost. It can give better offer when the co-polar polarized channels are highly correlated. We carry out the basic MIMO system in order to understand the general principle of MIMO wireless communication. Then two MIMO channel models are developed for the multi-polarized MIMO channels. The general information theory for MIMO systems is briefly discussed. Finally, the dual-polarized MIMO gain in accordance with the single-polar MIMO systems and the upper capacity bound are also developed.
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Dates et versions

hal-00450349 , version 1 (26-01-2010)

Identifiants

  • HAL Id : hal-00450349 , version 1

Citer

Nuttapol Prayongpun, Kosai Raoof. On Capacity of Multi-Element Dual Polarized Antenna Systems. Kosai Raoof, Huaibei Zhou. Advanced MIMO Systems, Scientific Research Publishing, USA, pp.173-192, 2009. ⟨hal-00450349⟩
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