Scheduling approach for MIMO with Tomlinson-Harashima precoding

Özdemir, Battal and Gürbüz, Özgür (2006) Scheduling approach for MIMO with Tomlinson-Harashima precoding. In: IEEE Vehicular Technology Conference, Melbourne, Australia

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We consider the downlink of a wireless network, where Tomlinson-Harashima Precoding (THP) is applied as a MIMO spatial multiplexing method. THP facilitates a point-tomultipoint transmission strategy, in which a subset of mobile stations receives data packets over parallel subchannels formed by precoding. In this paper, we propose a low-complexity scheduling algorithm that determines the best subset of stations to maximize the system capacity. TH precoding is based on the QR factorization of the channel matrix H, and the proposed scheduling algorithm here makes use of incremental implementation for QR factorization with Gram-Schmidt algorithm. We show that significant reduction in complexity can be obtained over classical exhaustive search, while providing the same maximum capacity.
Item Type: Papers in Conference Proceedings
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Battal Özdemir
Date Deposited: 11 Dec 2006 02:00
Last Modified: 26 Apr 2022 08:33

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