A VHF-FM Digital Selective Calling System Mathematical Model Using Grade Of Service Criteria.
Abstract
This thesis presents a mathematical model of a maritime VHF-FM Digital Selective Calling (DSC) System using grade of service as a criterion to determine if a single DSC channel can accommodate both distress and commercial calling. The model calculates the probability of a call being delayed, the average delay of a call, the probability of a call being answered within a certain time frame, and the throughput for the random access calling systems of ALOHA, Slotted ALOHA, Slotted ALOHA with Capture. Keywords include: Digital Selective Calling; SFLCALL; Carrier Sense Multiple Access; Random Access Channel; Maritime Communications; DSC; VHF; Grade of Service; ALOHA; Marine radio.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1985
- Accession Number
- ADA161185
Entities
People
- James W. Decker
Organizations
- Naval Postgraduate School