On Delay-Limited Average Rate of HARQ-Based Predictor Antenna Systems

Predictor antenna (PA) system is referred to as a with two sets of antennas on the roof vehicle, where PAs positioned in front vehicle are used predict channel state observed by receive (RAs) that aligned behind PAs. In this letter, we study effect spatial mismatch accuracy information estimation, and analyze delay-constrained average rate hybrid automatic repeat request (HARQ)-based PA systems. We consider variable-length incremental redundancy (INR) HARQ protocol, derive closed-form expression for maximum subject delay constraint. Moreover, different parameters such speed, distance allocation performance. The results indicate that, compared open-loop case, delay-limited considerably improved our proposed PA-HARQ scheme.