Outage Performance for Full-Duplex Decode-and-Forward Relay Cooperative Networks with Low-Resolution ADCs

摘要

This paper focuses on outage performance for full-duplex (FD) decode-and-forward (DF) multi-relay networks with low-resolution analog-to-digital converters (ADCs). FD operation enables the relay to transmit and receive over same frequency band concurrently. Therefore, loop interference (LI) caused by signal leakage from transmitter deteriorates system performance. Based on instantaneous end-to-end capacity, we propose two relay selection strategies, including max signal-to-interference-plus-noise ratio (MS) strategy and hybrid relay (HR) strategy. To facilitate comparison, closed-form outage probability expressions are obtained for them and used to analysis. In addition, impact of resolution of ADC are investigated. Final results prove that HR mode is preferable in terms of outage probability. Both number of quantization bits and location of low-resolution ADC have significant impacts on outage performance.