Collecting and Restoring Vintage Radios by Stenning Paul

By Stenning Paul

The October 2002 variation of daily useful Electronics journal (sister journal to Radio Bygones) contained a 16-page complement on classic radio accumulating and service.

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5, the arrivals of SUs are more evenly distributed between the two clusters. 5. 4, where the actual arrival rate of SUs into the system increases with α. 9 Blocking probability of SUs in CL-2 versus λp. 10 Dropping probability of SUs versus λp. 11 Service-completion throughput of SUs versus λp. 11 it can be observed that the total service-completion throughput of SUs, R, increases with α. 5}. This is because the total subchannel availability for SUs is the same regardless of how the arrival rates are distributed between the two clusters.

For the system at the three states (1,0,0), (0,1,0), and (1,1,0), the numbers of dropped SUs due to channel occupancy by PUs are equal to 1, 1, and 2, respectively. Hence, the total rate of dropping SUs equals λp(π1,0,0 + π 0,1,0 + 2π1,1,0). 11) γ 1(1 − Pbl ,1 ) + γ 2 (1 − Pbl ,2 ) We define the service-completion throughput of SUs as the average rate of SUs completing the transmission using subchannels. Thus, let R denote the service-completion throughput of SUs. 3 Performance Evaluation Both numerical and simulation results are reported; the simulation experiments were conducted to validate the numerical analysis.

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