In this letter a physical limit to the information capacity of a multiple-input multiple-output (MIMO) Gaussian channel is presented exploiting the theory of non-redundant sampling of scattered fields. For a MIMO narrow-band system of arbitrarily large spatial extension, the information capacity limit is the same as the one of a single-input single-output (SISO) ultra-wide band (UWB) system. For MIMO systems of finite size, transmitting over a range of frequencies, space and frequency diversities can be optimally combined by allocating the signal power uniformly across space, and increasing linearly across frequency.

Physical Limits to the Capacity of Wide-band Gaussian MIMO Channels / Martini, Anna; Franceschetti, Massimo; Massa, Andrea. - In: IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS. - ISSN 1536-1276. - STAMPA. - 8:7(2009), pp. 3396-3400. [10.1109/TWC.2009.080774]

Physical Limits to the Capacity of Wide-band Gaussian MIMO Channels

Martini, Anna;Franceschetti, Massimo;Massa, Andrea
2009

Abstract

In this letter a physical limit to the information capacity of a multiple-input multiple-output (MIMO) Gaussian channel is presented exploiting the theory of non-redundant sampling of scattered fields. For a MIMO narrow-band system of arbitrarily large spatial extension, the information capacity limit is the same as the one of a single-input single-output (SISO) ultra-wide band (UWB) system. For MIMO systems of finite size, transmitting over a range of frequencies, space and frequency diversities can be optimally combined by allocating the signal power uniformly across space, and increasing linearly across frequency.
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Martini, Anna; Franceschetti, Massimo; Massa, Andrea
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11572/76420
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