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Computationally Efficient Multi-Cell Joint Channel Estimation in TDD-CDMA Systems
Peng XUE Duk Kyung KIM
IEICE TRANSACTIONS on Communications
Publication Date: 2010/09/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
TDD-CDMA, multi-cell joint channel estimation, Cholesky, block-Toeplitz, block-Levinson,
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In this letter, a low complexity multi-cell joint channel estimation (MJCE) scheme is proposed. With proper arrangement of the multi-cell midamble matrix and channel impulse response (CIR) vector, the MJCE operation is formulated to solve a block-Toeplitz linear system. The block-Levinson algorithm is adopted to solve this problem instead of the Cholesky algorithm. Our results show that the proposed MJCE scheme can be a practical choice with significantly lower complexity, compared with the previous schemes with the Cholesky algorithm.