Analysis of the Uplink Maximum Achievable Rate With Location-Dependent Intercell Signal Interference Factors Based on Linear Wyner Model

Abstract

To enhance spectral efficiency, full frequency reuse has been adopted in advanced cellular communication networks, which, however, generates severe intercell cochannel interference and degrades the achievable rate at mobile terminals, particularly for those located near cell boundaries. Therefore, it is of great importance and interest for network operators and service providers to evaluate and understand the impact of locationdependent intercell cochannel interference on the achievable data rate in cellular networks. In this paper, considering a realistic spatial distribution of user locations, we first derive and analyze the probability density function (pdf) of the intercell power interference factor, which represents path loss of the adjacent cell signals, for the classic linear Wyner model. The closed-form result of the maximum achievable rate in cellular uplink channels is also derived under the Nakagami- m fading model. Based on these new results, an upper bound of the uplink maximum achievable rate with location-dependent intercell signal interference factors is calculated. Furthermore, the rate is analyzed in a running-train scenario for the application of the linear Wyner model. Numerical results show that user locations have strong impact on the maximum achievable rate per cell.