On the MIMO Channel Capacity of Multi-Dimensional Signal Sets
On the MIMO Channel Capacity of Multi-Dimensional Signal Sets
In this contribution we evaluate the capacity of Multi-Input Multi-Output (MIMO) systems using multi-dimensional PSK/QAM signal sets. It was shown that transmit diversity is capable of narrowing the gap between the capacity of the Rayleigh-fading channel and the AWGN channel. However, since this gap becomes narrower when the receiver diversity order is increased, for higher-order receiver diversity the performance advantage of transmit diversity diminishes. A MIMO system having full multiplexing gain has a higher achievable throughput than the corresponding MIMO system designed for full diversity gain, although this is attained at the cost of a higher complexity and a higher SNR. The tradeoffs between diversity gain, multiplexing gain, complexity and bandwidth are studied.
Capacity, diversity, MIMO, multiplexing, multi-dimensional signal set
528-536
Ng, S. X.
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Heath, R.
25cb0e00-c8be-4009-9482-91f50945a74f
March 2006
Ng, S. X.
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Heath, R.
25cb0e00-c8be-4009-9482-91f50945a74f
Ng, S. X. and Hanzo, L.
,
Heath, R.
(ed.)
(2006)
On the MIMO Channel Capacity of Multi-Dimensional Signal Sets.
IEEE Transactions on Vehicular Technology, 55 (2), .
Abstract
In this contribution we evaluate the capacity of Multi-Input Multi-Output (MIMO) systems using multi-dimensional PSK/QAM signal sets. It was shown that transmit diversity is capable of narrowing the gap between the capacity of the Rayleigh-fading channel and the AWGN channel. However, since this gap becomes narrower when the receiver diversity order is increased, for higher-order receiver diversity the performance advantage of transmit diversity diminishes. A MIMO system having full multiplexing gain has a higher achievable throughput than the corresponding MIMO system designed for full diversity gain, although this is attained at the cost of a higher complexity and a higher SNR. The tradeoffs between diversity gain, multiplexing gain, complexity and bandwidth are studied.
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capacity-vt06.pdf
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More information
Published date: March 2006
Keywords:
Capacity, diversity, MIMO, multiplexing, multi-dimensional signal set
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 262104
URI: http://eprints.soton.ac.uk/id/eprint/262104
ISSN: 0018-9545
PURE UUID: 863c7c90-c0bb-4fa5-9d0f-a063103f8685
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Date deposited: 22 Mar 2006
Last modified: 18 Mar 2024 02:48
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Contributors
Author:
S. X. Ng
Author:
L. Hanzo
Editor:
R. Heath
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