Signaling Over Two-User Parallel Gaussian Interference Channels: Outage Analysis

摘要: This paper presents an outage analysis for a two-user parallel Gaussian interference channel consisting of two sub-channels. Each sub-channel is modeled as with quasi-static and flat fading. Both users employ single-layer code-books maintain statistical correlation $\rho $ between the signals transmitted over underlying When joint decoding (JD) performed at receivers, setting =0$ minimizes probability, regardless value signal-to-noise ratio (SNR). It shown, however, that if receivers treat noise (TIN) or cancel (CI), optimum approaches 1 SNR goes to infinity. Motivated by these observations, we let under JD =1$ TIN CI compute probability in finite SNR, assuming direct crossover coefficients are independent zero-mean complex random variables possibly different variances. In asymptote large transmission rate per user $r\log \mathrm {snr}$ , it shown scales like $\mathrm {snr}^{-(1-r)}$ both CI, while vanishes least fast {snr}^{-\min \{2-r,4(1-r)\}}\log JD. concluded extending some results arbitrary number