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Coordinated Multi-Point (CoMP) transmission is considered for Long Term Evolution - Advanced (LTE-A) as an effective method to improve both average and cell-edge throughput. However, most of current research on CoMP with Multi-User (MU)-MIMO are under ideal assumption. In this paper, we study CoMP under realistic conditions, including limited feedback and complexity. Taking both performance and complexity...
We address the user selection scheme in multi-user wireless communication system, utilizing zero-forcing beamforming for spatial division multiple access. Recently, it has been shown that multi-user scheduling can help to achieve significant throughput gain in addition to the MIMO spatial multiplexing gain. And the capacity-greedy user selection algorithm can achieve near-optimal performance with...
Codebook based multiple-input multiple-output (MIMO) precoding can significantly improve the system spectral efficiency with limited feedback and has been accepted as one of the most promising techniques for the evolved UTRA (E-UTRA). Compared with single-user (SU) MIMO, multi-user (MU) MIMO can further improve the system spectral efficiency due to increased degree of freedom in transmission. In order...
Codebook based multiple-input multiple-output (MIMO) preceding can significantly improve the system spectral efficiency with limited feedback and has been accepted as one of the most promising techniques for the Evolved UTRA (E-UTRA). Compared with single-user (SU) MIMO, multi-user (MU) MIMO can further improve the system spectral efficiency due to increased degree of freedom in transmission. In order...
Significant throughput gains can be obtained in multi-user wireless system by exploiting the combination of multi-user scheduling in media access control (MAC) layer and MIMO spatial multiplexing using precoding in physical (PHY) layer. In this paper, we propose a multi-stage hybrid scheduling scheme for codebook-based precoding system, which applies different scheduling methods at different scheduling...
Codebook based multiple-input multiple-output (MIMO) precoding can significantly improve the system spectral efficiency with limited feedback and has been accepted as one of the most promising techniques for the Evolved UTRA (E-UTRA). In this paper, firstly, we investigate precoding techniques through system-level simulation in EUTRA environment including various precoding modes, precoding methods...
MIMO-OFDM is a promising technology for supporting high data rate communication. Meanwhile, HARQ is known as an effective method to ensure highly reliable communications. The challenges on HARQ for MIMO-OFDM systems lie on coping with multidimensional resource and large feedback. In this paper, one space-time-frequency diversity HARQ is proposed to explore the multidimensional resource efficiently...
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