Method and apparatus for despread data in wireless communication system

摘要

The present invention provides a method for despreading spread signal used in a receiver of a wireless communication system, comprising the steps of: preprocessing spread signal to derive a group of spreading chips corresponding to a data symbol; processing Hie spreading chips to extract cophase components and orthogonal components of each of the spreading chips; and converting and combining the group of cophase components and orthogonal components according to a preset selecting signal to derive a group of despreading chips. The present invention further provides an apparatus for carrying out the above-mentioned method, which significantly simplifies the design of a dispreading circuit and reduces the area of the dispreading circuit.

主权项

1. A method for despreading a spread signal used in a receiver of a wireless communication system, comprising:
preprocessing the spread signal to derive a group of spreading chips corresponding to a data symbol; processing the spreading chips to extract cophase components and orthogonal components of each spreading chip; and combining the group of cophase components and orthogonal components to derive a group of despreading chips based on a preset selecting signal, wherein a real component of despread data is obtained, without a multiplier, using only the orthogonal component with one of odd bits and even bits of a spreading sequence and only the cophase component with the other of the odd bits and even bits of the spreading sequence.