Receiving system using training pattern correlation for improved signal reception

DETAILED DESCRIPTION In view of the foregoing, an object of this invention is to provide a transmission apparatus and transmission method which are more resistant to the distortion of channel as compared with the conventional apparatus.
The foregoing objects and other objects of the invention have been achieved by the provision of a transmission apparatus comprising: pattern generation means (4A) for generating the same pattern data as those of the known pattern data (ts) contained in the transmitting data to be transmitted to the transmission channel; correlation detection means (4A) for detecting successively the correlation between the receiving data (r.
sub.
k) to be received through the transmission channel and the pattern data (ts) as the correlation values (CorrRS.
sub.
k); and signal processing means (4A) for demodulating the receiving data (r.
sub.
k) depending upon the estimated result after successively estimating the characteristic of the transmission channel based on the correlation values.
Furthermore, according to this invention, a transmission method comprises: a processing for obtaining the correlation between the pattern data (ts) and the receiving data (r.
sub.
k) to be received through the transmission channel after generating the pattern identical with the known pattern data (ts) contained in the transmitting data to be transmitted to the transmission channel; and a processing for demodulating the receiving data (r.
sub.
k) depending upon the estimated result after successively estimating the characteristic of the transmission channel depending upon the correlation values (CorrRS.
sub.
k) obtained by the above mentioned processing.
The same pattern data as the known pattern data (ts) contained in the transmission data to be transmitted to the transmission channel is generated on the receiving side, and the correlation between the pattern data (ts) and the receiving data (r.
sub.
k) to be received through the transmission channel is obtained.
Then, the characteristic of the transmission channel is successively estimated depending upon the correlation values (CorrRS