Background. The appearance of femtocells in LTE networks has provided indoor coverage and overcome large data flows for operators. However, strong interference occurs neighbouring femtocell users due to the limited available spectrum cellular that transmit same radio range. In densely deployed environments, issues single-channel cause significant performance degradation. this study, we mitigate...

3 Generation Partnership Project Long Term Evolution (3GPP-LTE) is focusing towards aggressive frequency reuse i.e. reuse of 1 so that we can get maximum number (all available spectrum) within a cell. Now, the major hindrance is co-channel interference which increases dramatically due to nearby adjacent co-channel cell and most especially for cell edge users. Traditional frequency reuse concept...

A number of inter-cell interference coordination schemes have been proposed to mitigate the inter-cell interference problem for orthogonal frequency division multiple access (OFDMA) systems and among them, partial frequency reuse is considered one of the most promising approaches. In this paper, we propose an inter-cell interference mitigation scheme for an OFDMA downlink system, which makes us...

This paper investigates the problem of inter-cell interference (ICI) in Long Term Evolution (LTE) mobile systems, which is one of the main problems that causes loss of packets between the base station and the mobile station. Recently, different frequency reuse methods, such as soft and fractional frequency reuse, have been introduced in order to mitigate this type of interference. In this paper...

General packet radio service (GPRS) is designed for transmitting packet data and supposed to take its radio resource from the pool of channels unused by GSM voice services. Obviously, the introduction of GPRS affects on the voice services. In this paper the outage probability of non-frequency hopping and frequency hopping systems with different frequency reuse factor has been calculated in ord...

This paper proposes a novel frequency reuse scheme in a hierarchical cellular network using the long-term evolution (LTE) technology. Universal frequency reuse (UFR) is targeted for future generation multi-cellular wireless networks. However, current research has shown that implementation of UFR may lead to intolerable interference levels experienced by user equipments in the vicinity of the ce...

This paper presents a simulation based energy consumption analysis of a heterogeneous network (HetNet) consisting of Long Term Evolution (LTE) macro-cells and LTE femto-cells. Two potential areas of energy savings are evaluated, namely, sleep modes and spectrum assignment. Sleep modes are demonstrated with practical component level power models, resulting considerable energy savings. Three spec...

Abstract—In the cellular MIMO systems, the system capacity can be increased with the presence of multi-user diversity (MUD). In this paper, a hybrid frequency reuse algorithm is proposed to realize efficient frequency reuse factor (FRF) allocation for cellular MIMO systems with MUD. As a result, the system capacity will be increased greatly. The system capacities by using the proposed algorithm...

We present a novel frequency partitioning technique of fractional frequency reuse (FFR) that reduces the effect of co-channel interference and increases the capacity of OFDM systems. The usable sub-channel sets are classified into the common sub-channel sets for all cells and the dedicated sub-channel sets for specific cell types in FFR. The proposed fractional frequency reuse with ordering sch...

As the demand for reliable high speed data transmission increases, the capacity of downlink cellular multiple-input multiple-output (MIMO) systems is of much interest. Unfortunately, the capacity analysis regarding the frequency reuse factor (FRF) is rarely reported. In this paper, theoretical analyses for both ergodic and outage capacities for cellular MIMO systems are presented. The FRF is co...