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Two main parameters influence the performance of Handover (HO) in Cellular systems, the Hysteresis (Hys) and the Time-To-Trigger (TTT). In Self-Organized Networks (SON) as has been proposed for LTE, the SON methods configure and optimize these two parameters to optimize HO performance. In this paper, we model the LTE HO procedure and propose an algorithm for self-configuration of the two HO trigger...
In this paper, we propose a new transmission scheme with two relay stations and phase feedback channels between the relays and the destination node. The exploiting of a preprocessor use in the relay stations is managed to achieve a full diversity order and also an array gain at the destination node. A phase feedback investigation for the proposed scheme is presented assuming quasi-static flat Rayleigh...
In this paper, we propose a novel linear equalization and progressive grouping-assisted constrained Viterbi algorithm (LEG-CVA) as a near-maximum likelihood sequence estimation (MLSE) approach for the downlink. The simulation results show that the reduced-complexity algorithm is highly attractive with large system dimensions such as those in the time-duplexing high speed packet access (TD-HSPA) system,...
We have reported that the use of cooperative nodes is effective for enhancing the reliability of data transmission between a source (S) and a destination (D) in a wireless multi-hop network by means of transmit diversity effect [1]. In the previous work, we have proposed two methods on cooperative node selection for each forwarding node over the route between S and D established by the Dynamic Source...
In LTE Release-8, Multi-user MIMO (MU-MIMO) in the uplink direction is supported with improvement of LTE spectrum efficiency. The further enhancement of uplink reference signal in LTE Release-10 guarantees the bandwidth allocation flexibility and orthogonality of uplink MU-MIMO application in LTE networks. In this paper, the practical MU-MIMO scheduling flow is described and several utilized MU-MIMO...
A transmission strategy that consists of a spatial scheduling algorithm and a precoding algorithm is developed for multi-carrier (MC) multi-user (MU) multiple-input multiple-output (MIMO) systems. The scheduling algorithm, called efficient multi-carrier ProSched (EMC-ProSched), adopts a novel scheduling metric that is able to efficiently perform the user selection for a multi-carrier system. The precoding...
Cooperative multi-point (CoMP) systems have been identified as a key technology to combat inter-cell interference (ICI), the major source of performance degradation in 4G cellular networks. Due to practical constraints such as backhaul network limitations, the subset of base stations (BS) that should cooperate within the same CoMP cluster must be carefully selected. In this paper we present a decentralized...
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