Performance of Hybrid ARQ in Block Fading Multiantenna Channels

In this paper, we compute the throughput of Hybrid ARQ schemes over slotted quasi static multiantenna channels. Specifically, we consider slotted Aloha, Hybrid ARQ Chase combining (HARQ-CC), and Hybrid ARQ incremental redundancy (HARQ-IR) schemes. Using reward-renewal theorem, we adopt closed-form throughput equations in [1] for multiantenna channels. Moreover, we investigate the affect of number of antennas on the throughput of these HARQ schemes with respect to offered load and target rate.