Title:
MEASURING METHOD FOR SENSITIVITY AND DISTURBING WAVE CHARACTERISTIC OF RECEIVER
Document Type and Number:
Japanese Patent JP3536072
Kind Code:
B2
Abstract:
PURPOSE: To provide a method which can automatically measure the sensitivity of a receiver and the disturbing wave characteristic with high efficiency and high accuracy regardless of the characteristic of a bit error rate that is defined to the receiving input level of the receiver.
CONSTITUTION: Two types of means are provided to estimate the receiving input levels where the bit error rate of a receiver is set at the prescribed value. A 1st estimating means estimates an error. If this estimated error is smaller than the allowable value, the 1st estimating means estimates the receiving input level. The 1st estimating means is automatically switched to a 2nd estimating means when the estimated error is larger than the allowable value. Thus the 2nd estimating means estimates the receiving input level. Then the 1st estimating means simulates the characteristic of the bit error rate by a secondary approximate expression and calculates a receiving input level Lx to a prescribed bit error rate Bs. A secondary approximate expression estimates and calculates the bit error rates to the receiving input levels La to Le by the least squares method. The 2nd estimating means uses the primary approximation.
Inventors:
Yokoyama, Mitsuru
Yamada, Katsuji
Obara, Masatoshi
Yamada, Katsuji
Obara, Masatoshi
Application Number:
JP30818194A
Publication Date:
June 07, 2004
Filing Date:
November 17, 1994
Export Citation:
Assignee:
HEWLETT PACKARD JAPAN LTD
International Classes:
H04B1/10; H04B17/00; H04B17/29; H04L27/00; H04L1/00; (IPC1-7): H04B17/00; H04L1/00; H04L27/00
Attorney, Agent or Firm:
加藤 公久