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The information transmission problem in a class of wireless multi-user single-antenna half-duplex relay interference networks is studied. In these networks there are multiple clusters of sources. All the terminals in each source cluster desire to transmit independent messages to a single destination, through multiple layers of intermediate half-duplex relays. We adopt a cluster successive relaying...
Many researchers have recently proposed using LTE to support traffic safety and transportation efficiency applications in vehicular ad hoc networks (VANETs). The deviceto- device (D2D) communication technique underlay LTE network has been considered as an effective way to potentially conduct vehicle-to- vehicle (V2V) communications. Since the vehicular communication environment has different characteristics...
A location based gradual beamforming and soft handover scheme for high speed train (HST) equipped with linearly distributed multi-antennas is presented in this paper. The simple and effective gradual beamforming is done based on the priori location information and achieves the array gain, statistical optimal beamforming and tapered beamforming are both analyzed here. The statistical inter-channel...
The uplink channel in noncooperative cellular networks with distributed multi-antenna sets are considered in this paper. Only matched filter(MF) Receivers is analyzed here, since previous work has shown that the MF receiver performs the same as minimum-mean-square-error(MMSE) receivers when the number of base station(BS) antennas goes to infinite. Compared with the result of co-located case, the multi-user...
The interference channel (IC) is the basic underlying channel model for many practical multi-terminal communication scenarios. Here, we consider a modified three-user IC with dual-antenna transmitters and receivers where we allow one receiver to have a finite-rate unidirectional link to another receiver. This kind of receiver-to-receiver link may exist in cellular networks with base-station backhaul...
Cell range expansion (CRE) by pico eNodeB in heterogeneous networks can reduce the uplink interference effectively at the cost of the downlink interference increasing. It will lead to the system capacity decreasing apparently with a large range expansion bias. In this paper, we propose an asymmetric cell selection scheme for inter-cell interference coordination (ICIC) to solve the problems. The UEs...
We study the error and diversity-multiplexing tradeoff (DMT) performance of a (secondary) multi-user relay network, where a class of finite field network codes are applied in the relays to efficiently provide spatial diversity. To eliminate spectral efficiency loss induced by half-duplex limitation we adopt the cognitive radio overlay spectrum sharing concept and consider aligning the relays' operation...
In this paper, the benefit of rateless codes combining with multi-antenna technique is exploited to provide quality-of-service (QoS) guarantee while maximizing the spectral efficiency in a limited feedback multiuser MIMO downlink. Critical to the design of such a system is the achievement of channel state information (CSI) at the base station (BS) to schedule the optimal users and pre-cancel the interuser...
Multi-User Multiple Input Multiple Output (MU- MIMO) technique is introduced into 3rd Generation Partnership Project (3GPP) Long-Term Evolution (LTE) to enhance the system capacity and spectrum efficiency. On the other hand, Coordinated Multi-Point transmission and reception (CoMP) technique which can reduce inter-cell interference (ICI) significantly, has been adopted in LTE-Advanced as one of the...
In this paper, we propose a new user scheduling scheme which can reduce the system feedback significantly for the MIMO downlink system in multiuser cellular networks. The proposed scheme first performs user scheduling according to the valuebook-based scalar feedback of all users' channel gains and then applies block diagonalization (BD) precoding according to the codebook-based matrix feedback of...
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