Low Complexity Algorithms for Multi-Cell Joint Channel Estimation in TDD-CDMA Systems

Peng XUE
Jae Hyun PARK
Duk Kyung KIM

IEICE TRANSACTIONS on Communications   Vol.E94-B    No.8    pp.2431-2434
Publication Date: 2011/08/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.2431
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
TDD-CDMA,  midamble,  multi-cell joint channel estimation,  block-toeplitz,  almost block-Toeplitz,  

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In this letter, we propose two low complexity algorithms for least square (LS) and minimum mean square error (MMSE) based multi-cell joint channel estimation (MJCE). The algorithm for LS-MJCE achieves the same complexity and mean square error (MSE) performance as the previously proposed most efficient algorithm, while the algorithm for MMSE-MJCE is superior to the conventional ones, in terms of either complexity or MSE performance.