Distribution of uplink inter-cell interference in OFDMA networks with power control

Approximation of Uplink Inter-Cell Interference in FDMA Small Cell Networks

“…Note that the analysis of a UL FDMA system is more involved than its downlink counterpart due to the power control mechanisms used at UEs. For the UL micro-scopic analysis, existing works either use • Approach 1, which provides closed-form but complicated analytical results for a network with a small number of interfering cells, each cell with a regularly-shaped UE distribution area, e.g., a disk or a hexagon [4]; • Approach 2, which makes a empirical conjecture on the UL interference distribution and on that basis derives analytical results for a network with multiple interfering cells placed on a regularly-shaped lattice, e.g., a hexagonal lattice [5], [6]; • Approach 3, which conducts system-level simulations to directly obtain empirical results for a complex network with practical deployment of multiple cells placed on irregular locations [1], [7], [8].…”

DNA-GA: A new approach of network performance analysis

“…Regarding R b and f Z b (z), we have two remarks in the following. Remark 1: Unlike the existing works, e.g., [3][4][5][6][9][10], where only the uniform UE distribution was considered, DNA-GA can handle any probability density function (PDF) of general UE distribution, here denoted by…”

“…Within the microscopic analysis and paying special attention to uplink (UL), in [5], the authors considered a single UL interfering cell with a disk-shaped coverage area and presented closed-form expressions for the UL interference considering both path loss and shadow fading. In [6], the authors conjectured that the UL interference in a hexagonal grid based cellular network may follow a lognormal distribution, which was verified via simulation.…”

Microscopic Analysis of the Uplink Interference in FDMA Small Cell Networks

“…These network performance analysis tools can be broadly classified into two large groups, i.e., macroscopic analysis and microscopic analysis [2][3][4][5][6][7][8][9][10].The macroscopic analysis assumes that both user equipments (UEs) and base stations (BSs) are randomly deployed in the network, often following the homogeneous Poisson distribution, and usually try to derive the signal-to-interference-plus-noise ratio (SINR) distribution of UEs and other performance metrics such as the coverage probability and the area spectral efficiency [2,3]. The microscopic analysis is often conducted assuming that UEs are randomly placed and BSs are deterministically deployed, i.e., the BS positions are known [4][5][6][7][8][9][10].The microscopic analysis is important because it allows for a network-specific study and optimization, e.g., optimizing the parameters of UL power control [8] and performing percell loading balance in a specific SCN [9]. In contrast, the macroscopic analysis investigates network performance at a high level by averaging out all the possible BS deployments [2,3].Generally speaking, the microscopic analysis gives more targeted results for specific networks than the macroscopic analysis, while the macroscopic analysis gives a general picture of the network performance.In this paper, we focus on the microscopic analysis.…”

“…In particular, we consider an uplink (UL) frequency division multiple access (FDMA) SCN, which has been widely adopted in the 4th generation (4G) networks, i.e., the UL single-carrier FDMA (SC-FDMA) system in the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) networks [11] and the UL orthogonal FDMA (OFDMA) system in the Worldwide Interoperability for Microwave Access (WiMAX) networks [12]. For the UL microscopic analysis, the existing works use • Approach 1, which provides closed-form expressions but complicated analytical results for a network with a small number of interfering cells and each cell has a regularlyshaped coverage area, e.g., a disk or a hexagon [4]. In [4], the authors considered a single UL interfering cell with a disk-shaped coverage area and presented closed-form expressions for the UL interference considering both path loss and shadow fading.• Approach 2, which first analyzes the UL interference and then makes an empirical assumption on the UL interference distribution, and on that basis derives analytical results October 5, 2018 DRAFT…”