Efficient MIMO channel estimation using complementary sequences
Efficient MIMO channel estimation using complementary sequences
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- Author(s): H.M. Wang 1 ; X.Q. Gao 1 ; B. Jiang 1 ; X.H. You 1 ; W. Hong 1
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View affiliations
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Affiliations:
1: National Mobile Communications Research Laboratory, State Key Laboratory of Millimeter Waves and the School of Information Science and Engineering, Southeast University, People's Republic of China
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Affiliations:
1: National Mobile Communications Research Laboratory, State Key Laboratory of Millimeter Waves and the School of Information Science and Engineering, Southeast University, People's Republic of China
- Source:
Volume 1, Issue 5,
October 2007,
p.
962 – 969
DOI: 10.1049/iet-com:20060581 , Print ISSN 1751-8628, Online ISSN 1751-8636
Low complexity channel estimation for single-carrier block transmission systems over multiple-input multiple-output time varying frequency-selective channels is investigated. A time slot structure that uses Golay complementary sequences with perfect periodic autocorrelations as two-sided pilot blocks is presented. Employing this strucutre, optimal least square estimate in the minimum mean square error (MMSE) sense is achieved. Furthermore, a computationally efficient algorithm which is named as fast periodic Golay correlation is proposed based on the specific generator and the properties related to circulant matrices. Finally, the simulation results show the MMSE performance of the proposed scheme and algorithm.
Inspec keywords: time-varying channels; correlation methods; wireless channels; matrix algebra; channel estimation; mean square error methods; sequences; MIMO communication
Other keywords:
Subjects: Interpolation and function approximation (numerical analysis); Linear algebra (numerical analysis); Communication channel equalisation and identification; Radio links and equipment
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