Remarks on the criteria of constructing MIMO-MAC DMT optimal codes

Francis Lu*, Jyrki Lahtonen, Roope Vehkalahti, Camilla Hollanti

*此作品的通信作者

研究成果: Conference contribution同行評審

7 引文 斯高帕斯(Scopus)

摘要

In this paper we investigate the criteria proposed by Coronel et at. for constructing MIMO MAC-DMT optimal codes over several classes of fading channels. We first show by a counterexample that their DMT result might not be correct when the channel has selective fading. For the case of symmetric MIMO-MAC flat fading channels, we study their criteria for constructing MAC-DMT optimal codes when the number of receive antennas is sufficiently large. We show their criterion is equivalent to requiring the codes of any subset of users to satisfy a joint non-vanishing determinant criterion when operating in the antenna pooling regime. Finally an upper bound on the product of minimum eigenvalues of the difference matrices is provided, and is used to show MIMO-MAC lattice codes satisfying their criterion exist only when the target multiplexing gain is small.

原文English
主出版物標題IEEE Information Theory Workshop 2010, ITW 2010
DOIs
出版狀態Published - 27 7月 2010
事件IEEE Information Theory Workshop 2010, ITW 2010 - Cairo, Egypt
持續時間: 6 1月 20108 1月 2010

出版系列

名字IEEE Information Theory Workshop 2010, ITW 2010

Conference

ConferenceIEEE Information Theory Workshop 2010, ITW 2010
國家/地區Egypt
城市Cairo
期間6/01/108/01/10

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