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— In this paper we proposed two threshold-aided adaptive opportunistic transmission strategies in multiuser multiple-input multiple-output (MU-MIMO) downlink with limited feedback. Threshold scheme in company with transmission mode adaptation are employed to handle feedback cost and improve system performance. In one time slot, each mobile station (MS)(More)
—Topology control via per-node transmission power adjustment has been shown effective in extending network lifetime. However, most of existing algorithms construct static topologies which fail to consider the residual energy of network nodes, thus in fact they can not balance energy consumption efficiently. To address this problem, a lightweight distributed(More)
—In the K-user single-input single-output (SISO) frequency-selective fading interference channel, it is shown that the maximal achievable multiplexing gain is almost surely K/2 by using interference alignment (IA). However, when the signaling dimensions are limited, allocating all the resources to all users simultaneously is not optimal. So, a group based(More)
In this paper we introduced an opportunistic transmission scheme in MU-MIMO downlink with reduced feedback and mode adaptation. In this strategy both base station (BS) and mobile station (MS) are equipped with multiple antennas. Threshold scheme is employed. Only eligible MS whose channel quality exceeds a preset threshold would select transmission mode,(More)
We investigated the relationship between the clinical outcome and the GSTM1 null/present, GSTT1 null/present, and GSTP1 IIe105Val polymorphisms in breast cancer patients with chemotherapy. A total of 420 consecutive breast cancer patients diagnosed between January 2010 and December 2011 were eligible for inclusion in our retrospective study. The designs of(More)