書誌事項
- タイトル別名
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- Complexity-reduced Maximum Likelihood Detection with Block QR Decomposition for Super Hi-Vision Television Wireless Transmission System
抄録
We have been developing a portable digital transmission system for next generation television called “Super Hi-Vision (SHV)” with hundreds of Mbps-class transmission and high link reliability. To fulfill these requirements, we have been researching a multiple-input multiple-output (MIMO) multiplexing technology using a millimeter-wave (42/55-GHz) band allocated for broadcasting organizations. In this paper, we propose a low-complexity MIMO detection scheme that uses block QR decomposition with M-algorithm to reduce the computational complexity of the maximum likelihood detection (MLD) method. In the proposed algorithm, a MIMO channel is converted into a block upper triangular matrix multiplied by a unitary matrix and divided into some small block matrices. Then, the transmit signals are selected by Manhattan metrics to reduce the complexity, and squared Euclidean metrics of the selected signal candidates are calculated in these block matrices. Computer simulations with a correlated 4 x 4 MIMO channel demonstrate that the proposed scheme shows almost the same BER performance as that of the MLD and better BER performance than that of the conventional QRM-MLD (QR decomposition with M-algorithm MLD) with less complexity.
収録刊行物
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- 映像情報メディア学会誌
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映像情報メディア学会誌 67 (12), J488-J496, 2013
一般社団法人 映像情報メディア学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390282680103119104
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- NII論文ID
- 130003384628
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- ISSN
- 18816908
- 13426907
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可