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This paper compares several feedback schemes of a limited feedback system in a coordinated cellular networks. In a coordinated system one user can be served by different base stations (BSs) simultaneously. Conventional codebook is intended for single BS, its aim is to maximize the amplitude of the receive signal. When multiple BSs are equipped, phase discrimination among different BSs at the receive...
In this paper, we analyze the problem of efficient paging for group call searches under realistic mobility patterns. Taking as a basis a location update scheme, based on the definition of an adaptive macro-location area, adapted to the mobility pattern of the terminals, we characterize the residence probabilities in each location area of a generic macro-area. With this information, we propose and...
In this paper, we study resource allocation and relay selection in a decode-and-forward downlink OFDMA cooperative network assuming imperfect channel state information (CSI) at the base station (BS). We assume that due to feedback delay, the BS has only outdated CSI of BS to users and inter-user links. We propose a centralized optimization framework in which the BS takes decisions on the basis of...
In this paper, we propose a distributive queue-aware intra-cell user scheduling and inter-cell interference (ICI) management control design for a delay-optimal celluar downlink system with M base stations (BSs), and K users in each cell. Each BS has K downlink queues for K users respectively with heterogeneous arrivals and delay requirements. The ICI management control is adaptive to joint queue state...
Coordinated multiple point transmission and reception (CoMP) has attracted a lot of attention recently because of its potential for multi-cell co-channel interference (CCI) mitigation and spectral efficiency increase. CoMP inevitably requires increased signaling overhead and inter-base communication. Therefore in practice, only a limited number of Base Stations (BS) can cooperate with acceptable overhead...
This paper investigates the impact of limited feedback on user throughput in the uplink of a cellular system. We consider scenarios where the base-station has limited feedback resources, which it needs to allocate across the users it serves. We propose a general model that captures the effect of feedback allocation on the achievable rates for a user, which allows us to characterize the rate region...
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