Arq Link

SR provides the best throughput in high-error rate scenarios.

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Higher bandwidth–delay products require larger window sizes (GBN/SR) to maintain high throughput. 5. Hybrid ARQ (HARQ) SR provides the best throughput in high-error rate scenarios

combines traditional ARQ with Forward Error Correction (FEC) . The receiver attempts to correct small errors using error-correcting codes; if the error is too great, a retransmission is requested. This approach, specifically Type-II Hybrid ARQ , provides a more efficient approach in poor radio conditions, optimizing throughput. 6. Conclusion

ARQ increases latency due to retransmissions, making it less suitable for real-time applications like VoIP. Hybrid ARQ (HARQ) combines traditional ARQ with Forward

An Adaptive Type-I1 hybrid ARQ/FEC Protocol - Clemson University

ARQ is an indispensable tool for achieving reliable digital communication. While Stop-and-Wait is efficient for simple, low-delay networks, Go-Back-N and Selective Repeat are essential for modern high-speed networks. The hybrid approach (HARQ) offers the best balance of efficiency and reliability in modern wireless scenarios. Pros: Simple implementation.

The sender transmits one frame and waits for an ACK before sending the next. Pros: Simple implementation.