Transmission method, transmitter, and receiver for multi antenna wireless communication system

摘要

A transmitter includes first generator to generate pilot source signal by modulating pilot sequence, second generator to generate data source signal with time length longer than that of pilot source signal by modulating data sequence, first cyclic shifter to perform cyclic shift of first shift amount to pilot source signal to generate first pilot signal, second cyclic shifter to performs cyclic shift of second shift amount to data source signal to generate first data signal, third cyclic shifter to perform cyclic shift of third shift amount to pilot source signal to generate second pilot signal, fourth cyclic shifter to perform cyclic shift of fourth shift amount to data source signal to generate second data signal, first transmit antenna to transmit first pilot signal and first data signal, and second transmit antenna to transmit second pilot signal and second data signal.

主权项

1. A transmitter comprising:
a generator configured to generate a first sequence, a second sequence, a first block signal, and a second block signal, the first sequence being the same as a sequence obtained by performing a first cyclic shift on a CAZAC sequence, an amount of the first cyclic shift being a first amount, the second sequence being the same as a sequence obtained by performing a second cyclic shift on the CAZAC sequence, an amount of the second cyclic shift being a second amount different from the first amount, the first block signal being the same as a signal obtained by performing a third cyclic shift on a block signal, an amount of the third cyclic shift being a third amount, the second block signal being the same as a signal obtained by performing a fourth cyclic shift on the block signal an amount of the fourth cyclic shift being a fourth amount different from the third amount; wherein a period in which the first sequence and the second sequence are transmitted differs from a period in which the first block signal and the second block signal are transmitted; a gap between the first amount and the second amount differs from a gap between the third amount and the fourth amount; the first sequence and the first block signal are transmitted at least via a first antenna; and the second sequence and the second block signal are transmitted at least via a second antenna.