Implementation Aspects of Antenna Selection for MIMO Systems
Author
Summary, in English
Antenna selection is a promising technique for reducing complexity of multiple-antenna (MIMO) systems. In antenna selection, more antenna elements than RF transceiver chains are available for up-conversion and down-conversion. A subset of the available antenna elements is selected and connected to the RF chains. The reduction in the number of RF chains helps to reduce the implementation cost of multi-antenna systems. This paper considers a number of "practical" issues in the implementation of such systems. We discuss schemes for the channel estimation for all all antenna elements, and show that antenna selection is robust to channel estimation errors. RF preprocessing can be used to enhance the array gain of antenna selection schemes; the performance is robust to errors in the RF elements used for the preprocessing Finally, we analyze both bulk selection and per-tone selection in MIMO-OFDM systems, and show that the former is usually preferable. Results from simulations with 802.11n-compliant systems, and capacity results in measured channels show that SNR and capacity gains can be achieved with antenna selection in practical situations.
Publishing year
2006
Language
English
Pages
1-7
Publication/Series
First International Conference on Communications and Networking in China, 2006. ChinaCom '06.
Document type
Conference paper
Publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Conference name
First International Conference on Communications and Networking in China, 2006. ChinaCom '06.
Conference date
2006-10-25 - 2006-10-27
Conference place
Beijing, China
Status
Published
ISBN/ISSN/Other
- ISBN: 1-4244-0463-0