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Multicell processing (MCP) techniques have attracted considerable research attention since they can effectively mitigate other-cell interference (OCI). However, the potential gain of MCP comes with several practical challenges including huge overhead and stringent synchronization requirements. In this paper, we propose cooperative opportunistic scheduling to coordinate OCI for downlink transmission...
This paper addresses the problem of joint transceiver design for Tomlinson-Harashima Preceding (THP) in the multiuser multiple-input-multiple-output (MIMO) downlink. Different from previous work, we perform stream-wise (both inter-user and intra-user) interference pre-cancelation at the transmitter. A minimum total mean square error (MT-MSE) criterion is used to formulate our optimization problem...
In uplink multiuser multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems, inter-user interference includes co-channel interference (CCI) due to spatial multiplexing and inter-carrier interference (ICI) due to carrier-frequency offset (CFO). In this letter, a space-frequency joint processing scheme is proposed to suppress the two-dimensional interference alternatively...
Many precoding schemes in downlink multiuser MIMO systems require perfect channel state information of all users at the transmitter, which is hard to realize in practical systems. Random beamforming scheme is a conventional method to reduce the amount of feedback. However, it only enjoys significant performance gains with a large number of users, which limits its practical application. We propose...
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