| US 7,555,295 B2 | ||
| System for determining radiated radio frequency (RF) receiver sensitivity and related methods | ||
| Yihong Qi, St. Agatha (Canada); Perry Jarmuszewski, Waterloo (Canada); and Michael Certain, Kitchener (Canada) | ||
| Assigned to Research In Motion Limited, Waterloo, Ontario (Canada) | ||
| Filed on Mar. 01, 2006, as Appl. No. 11/365,537. | ||
| Prior Publication US 2007/0207757 A1, Sep. 06, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04Q 7/20 (2006.01) | ||
| U.S. Cl. 455—425 [455/423; 455/67.11; 455/67.12; 455/67.13; 455/226.1; 455/226.2; 455/226.3; 455/254; 716/4; 343/703] | 32 Claims |
| 1. A test method for determining radiated radio frequency (RF) receiver sensitivity defined based upon a traffic channel (TCH)
power level at a desired bit error rate (BER) for a plurality of channels extending over at least one frequency band using
an RF source coupled to an RF receiver by a wireless RF communications link, the test method comprising:
determining a BER versus TCH power level function for an initial channel;
determining an estimated TCH power level for a subsequent channel based upon the BER versus TCH power level function and the
desired BER;
measuring a BER of the subsequent channel based upon the estimated TCH power level;
comparing the measured BER to the desired BER and using a difference therebetween along with the BER versus TCH power level
function to determine a next estimated TCH power level; and
repeating measuring and comparing if the difference is greater than a threshold to thereby determine a TCH power level in
the subsequent channel corresponding to the desired BER.
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