- タイトル
- Throughput bound of CDMA unslotted ALOHA with hybrid type II ARQ using rate compatible punctured turbo codes
- 著者
- S.Yoon, Y.Bar-Ness
- 出典
- Proc. IEEE GLOBECOM,
San Francisco, CA,
2003/12.
- キーワード
- hybrid type-II ARQ, pure ALOHA, DS-CDMA, spread ALOHA, adaptive control, packet combining, Poisson arrival, throughput, retransmission cutoff, channel load sensing
- 概要
- We derive a throughput bound of CDMA unslotted ALOHA with memory ARQ in general. Since the conventional "single queue with feedback" model, customarily employed for ALOHA system with pure or hybrid type-I ARQ, cannot be applied to this case, we introduce an expanded model, which consists of a network of queues, and apply Jackson theorem to simplify the analysis. When using code combining, it is very difficult to find the actual probability of packet success. Hence, instead of finding the actual values, we evaluate a lower bound on it. Together with the expanded model and the packet success probability bound, we obtain the throughput bound for given composite offered traffic using an iterative procedure.
- 分類
- [SST]直接拡散アロハ：純ALOHA (No.4431)