The present invention relates to an interpolation FIR filter having multiple data rates in a mobile communication system, and a method of filtering data using the same. The use of the SM optical fiber launchreceive system effectively reduces angular sensitivity, reduces unwanted system reflections, improves overall angular tolerance, and improves resonant peak reflectivity and resonant peak width. In another aspect, a method includes assigning a single image label to the input image, in which the single image label is selected from labels associated with multiple ranked nearest neighbor images. The reaction may be carried out at approximately between 10-40\xb0 C.