The PER is determined exclusively by the BER and the number of bits in the packet’s data payload and is not dependent by how the data is encoded or what happens during the transmit-receive process. Therefore the relationship between PER and BER is given by: PER =1− (1− BER)n Equation 1 The PER measurement and evaluation method is described in the APPENDIX in detail. ACTION BY THE MEETING ACP WG-S is invited to consider following actions. 1) Confirm the PER for a basis to extrapolate BER to evaluate maximum BER in AeroMACS SARPs validation. 2) This methodology will be described in Technical Manual. APPENDIX PER MEASURMENT AND EVALUATION METHOD 1) Relation between BER and PER The relationship between the BER and PER is valid for an ideal communication system that transmits data over binary symmetric channel with uncorrelated noise. This relationship is not valid for correlated noise channels and is dependent on the specific receiver implementation. The length of the packet in bits is n and the bit error probability for the channel is BP. Any packet that has one bit or more in error is discarded and the probability Pn of getting a packet in error is given by: Pn = 1 - (1- BP)n Equation 1 Pn is the packet error rate of n byte packet case, and BP is the bit error rate of one packet. . A real communications system is considered equivalent to the ideal system if they have the same PER. The equivalency means that the real system has the same packet throughput as the reference ideal system having the known BER=10-6. The PER is determined exclusively by the BER and the number of bits in the packet’s data payload and is not dependent by how the data is encoded or what happens during the transmit-receive process. Therefore the relationship between PER and BER is given by: PER =1− (1− BER)n Equation 2 Measurement Packet size and count
The PER is determined exclusively by the BER and the number of bits in the packet’s data payload and is not dependent by how the data is encoded or what happens during the transmit-receive process. Therefore the relationship between PER and BER is given by: PER =1− (1− BER)n Equation 1 The PER measurement and evaluation method is described in the APPENDIX in detail. ACTION BY THE MEETING ACP WG-S is invited to consider following actions. 1) Confirm the PER for a basis to extrapolate BER to evaluate maximum BER in AeroMACS SARPs validation. 2) This methodology will be described in Technical Manual. APPENDIX PER MEASURMENT AND EVALUATION METHOD 1) Relation between BER and PER The relationship between the BER and PER is valid for an ideal communication system that transmits data over binary symmetric channel with uncorrelated noise. This relationship is not valid for correlated noise channels and is dependent on the specific receiver implementation. The length of the packet in bits is n and the bit error probability for the channel is BP. Any packet that has one bit or more in error is discarded and the probability Pn of getting a packet in error is given by: Pn = 1 - (1- BP)n Equation 1 Pn is the packet error rate of n byte packet case, and BP is the bit error rate of one packet. . A real communications system is considered equivalent to the ideal system if they have the same PER. The equivalency means that the real system has the same packet throughput as the reference ideal system having the known BER=10-6. The PER is determined exclusively by the BER and the number of bits in the packet’s data payload and is not dependent by how the data is encoded or what happens during the transmit-receive process. Therefore the relationship between PER and BER is given by: PER =1− (1− BER)n Equation 2 Measurement Packet size and count
WP06%20-%20%20Packet%20Error%20Rate%20Evaluation%20method_10July.docx