Title :
Throughput Multiplexing Efficiency for MIMO Antenna Characterization
Author_Institution :
Dept. of Signals & Syst., Antenna Group, Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
The antenna-channel effects on multiple-input-multiple-output (MIMO) throughput are characterized in terms of spatial multiplexing (SM) efficiency. In order to show the antenna effects explicitly, the SM efficiency of an MIMO system (with imperfect transmit antennas) is derived analytically at high signal-to-noise ratio (SNR) regime. It is shown that correlation and power imbalance affect the throughput adversely (as expected) and independently. Although derived for imperfect transmit antennas, the close-form SM efficiency formula turns out to be accurate for 2 × 2 MIMO systems with imperfect receive antennas as well. It is also shown that the derived SM efficiency formula even reasonably predicts the measured SM efficiency of a Long Term Evolution (LTE) system.
Keywords :
Long Term Evolution; MIMO communication; receiving antennas; space division multiplexing; transmitting antennas; LTE system; MIMO antenna characterization; MIMO throughput; SM efficiency; SNR regime; antenna-channel effects; long term evolution system; multiple-input multiple-output throughput; receiving antennas; signal-to-noise ratio regime; spatial multiplexing efficiency; throughput multiplexing efficiency; transmitting antennas; Correlation; MIMO; Receiving antennas; Signal to noise ratio; Throughput; Transmitting antennas; Antennas; multiple-input–multiple-output (MIMO); spatial multiplexing (SM); throughput;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2013.2282952
