Throughput analysis for coded multichannel ALOHA random access

In this letter, we study coded random access with multichannel ALOHA where incremental redundancy-based re-Transmissions are employed. A closed-form expression for the throughput is derived, which allows optimizing key parameters for given conditions. A scaling property of multichannel ALOHA is also shown with an asymptotic throughput, which demonstrates that the throughput grows linearly with the number of subchannels in coded multichannel ALOHA for any initial rate.