Patent ID: 6731622
Filing Date: 2004-05-04
Classification: G01S,H04B,H04W

Abstract:
An apparatus for determining a power delay spectrum of a code division multiple access (CDMA) signal transmission between a CDMA base station and a CDMA mobile station on a plurality of propagation paths within a cell of a CDMA communication system, comprising:an analog-to-digital (A/D) converter for converting an analog CDMA multipath signal received from at least one antenna within said cell into a digital CDMA multipath signal; wherein said A/D converter is adapted for converting said analog CDMA multipath signal into a digital CDMA multipath signal having consecutive radio frames including consecutive time slots with spread complex pilot symbols and spread data symbols; a demultiplexer for extracting spread complex pilot symbols and spread data symbols from at least two consecutive time slots of each radio frame and for storing the extracted spread complex pilot symbols consecutively in a memory thereof; and at least one search processor for determining a power delay spectrum of each of the at least one antenna on the basis of said extracted and stored spread complex pilot symbols and said spread data symbols.