Tradeoff between Diversity Gain and Multiplexing Gain in MIMO Systems

Huang Qiu-lin; Shi Xiao-wei

doi:10.3724/SP.J.1146.2005.00964

Volume 29 Issue 3

Jan. 2011

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Huang Qiu-lin, Shi Xiao-wei. Tradeoff between Diversity Gain and Multiplexing Gain in MIMO Systems[J]. Journal of Electronics & Information Technology, 2007, 29(3): 681-685. doi: 10.3724/SP.J.1146.2005.00964

Citation:

Huang Qiu-lin, Shi Xiao-wei. Tradeoff between Diversity Gain and Multiplexing Gain in MIMO Systems[J]. Journal of Electronics & Information Technology, 2007, 29(3): 681-685. doi: 10.3724/SP.J.1146.2005.00964

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Tradeoff between Diversity Gain and Multiplexing Gain in MIMO Systems

doi: 10.3724/SP.J.1146.2005.00964

Received Date: 2005-08-04
Rev Recd Date: 2005-12-26
Publish Date: 2007-03-19

Abstract

Abstract

An optimal tradeoff formula between diversity gain and multiplexing gain was derived. The formula is a step decreasing and right continuous function，and the number of steps is equal to the number of receiving antennas. The diversity gain is relative to the block length, and can amount to the full diversity gain only when the block length is no less than the number of transmit antennas. The tradeoff shows that suitable space time codes would provide diversity gain and multiplexing gain simultaneously. However, two gains can not achieve the maximum level at the same time. By the tradeoff formula, the maximum diversity gain under a certain multiplexing gain can be estimated, and vice versa.

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References

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