Patent ID: 6097711
Filing Date: 2000-08-01
Classification: H04B,H04J

Abstract:
A DS-CDMA transmission method using a code multiplexing method which transmits a signal by generating a high bit rate transmission channel by code multiplexing a plurality of code channels, said DS-CDMA transmission method comprising, when assembling frames for respective code channels by inserting into information symbols pilot symbols used for channel estimation for coherent detection at fixed intervals, the steps of:dividing N code channels to K blocks each consisting of H code channels, where N is a number of multiplexed code channels, K is a number of blocks, H is a number of code channels in the block, and N=H.times.K;inserting pilot symbols into same positions of frames in the H code channels in a same block; andshifting positions of inserting said pilot symbols from block to block such that intervals between closest pilot symbols become uniform with regard to entire pilot symbols in the K blocks.