Patent ID: 6782035
Filing Date: 2004-08-24
Classification: H04B,H04J,H04W

Abstract:
A communication system comprising a first communication apparatus and a second communication apparatus, whereinthe first communication apparatus comprises: means for generating signals for a plurality of physical channels; and means for transmitting the signals for the plurality of physical channels over the plurality of physical channels, and the means for generating inserts known pilot symbols only into one of the signals for the plurality of physical channels, and the second communication apparatus comprises: means for receiving the signals for the plurality of physical channels over the plurality of physical channels; and means for carrying out coherent detection for all the plurality of physical channels by using the pilot symbols inserted into one of the signals for the plurality of physical channels, and wherein the means for transmitting makes, when transmitting the signal into which the pilot symbols have been inserted, transmission power of portions into which the pilot symbols have been inserted greater than transmission power of other portions, and wherein the first communication apparatus spreads each of the signals for the plurality of physical channels by using a different spreading code and transmits the spread signal, and the second communication apparatus despreads each of the received signals for the plurality of physical channels by using the different spreading code, and the means for transmitting makes, when transmitting the signal into which the pilot symbols have been inserted, the transmission power of the portions into which the pilot symbols have been inserted n times greater than the transmission power of the other portions, where n is a number of the plurality of physical channels.