Channel-adaptive MIMO detection based on the multiple-choice knapsack problem (MCKP)

I. Wei Lai*, Chia Han Lee, Gerd Ascheid, Tzi Dar Chiueh

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

The recently-proposed channel-adaptive multiple-input multiple-output (CA-MIMO) detection significantly reduces the average complexity of MIMO detection. Aiming at the just-acceptable error rate (JAER), the detection methods are switched according to the channel condition. In this letter, we formulate the switching of detection methods as a multiple-choice knapsack problem (MCKP). Then, based on the linear relaxation MCKP, the lower and upper bounds of the potential complexity saving of CA-MIMO are derived, where the former comes from our proposed switching strategy. The simulations show that the lower and upper bounds are tightly matched, demonstrating our two contributions: the evaluation of the optimal performance of the CA-MIMO detection without solving the NP-hard MCKP, and the design of an efficient and practical switching strategy.

原文英語
文章編號6308769
頁(從 - 到)633-636
頁數4
期刊IEEE Wireless Communications Letters
1
發行號6
DOIs
出版狀態已發佈 - 2012 九月 27
對外發佈

ASJC Scopus subject areas

  • 控制與系統工程
  • 電氣與電子工程

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