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A simple distributed user scheduling (DUS) scheme is proposed for the MIMO multi-way relay channel (MWRC), where K (K ≥ 2) M-antenna (M ≥ 2) users are selected from K clusters of users to conduct all-cast information exchange via an M-antenna amplify-and-forward (AF) relay. In particular, the proposed DUS is based on the individual performance metric calculated by each user with its local channel...
Virtual multiple-input multiple-output (V-MIMO) technology promises significant performance enhancements to cellular systems in terms of spectral efficiency (SE) and energy efficiency (EE). How these two conflicting metrics scale up in large cellular V-MIMO networks is unclear. This paper studies the EE-SE trade-off of the uplink of a multi-user cellular V-MIMO system with decode-and-forward type...
We introduce an opportunistic interference mitigation (OIM) protocol for cellular networks, where a user scheduling strategy is utilized in uplink K-cell environments with time-invariant channel coefficients and base stations (BSs) having M receive antennas. In the OIM scheme, each BS opportunistically selects a set of users who generate the minimum interference to the other BSs. We consider two OIM...
A novel hybrid feedback protocol is proposed for the multiuser multiple-input multiple-output downlink system. In the system under consideration, per-antenna scheduling is utilized. The base station (BS) employs spatial multiplexing and the users utilize zero-forcing receivers, creating multiple parallel spatial channels. For each spatial channel, exactly one user is scheduled at the BS, based on...
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