Method for realizing frequency domain scheduling in the time division duplex system and the system thereof

A communication system, wherein the system comprising:

• a first device for transmitting a non pre-coded reference symbol;
• a second device for obtaining a channel impulse response matrix experienced by the reference symbol transmitted from the first device from the reference symbol, and for obtaining the linear spatial domain pre-coding matrix of the candidate physical resource block used in transmitting data to the first device from the channel impulse response matrix, and for obtaining the channel quality indication of the corresponding physical resource block from the channel impulse response matrix and the linear spatial domain pre-coding matrix, and for performing the frequency domain scheduling according to the channel quality indication.

A communication system, wherein the system comprising:

• a first device for transmitting a non pre-coded reference symbol and performing frequency domain scheduling according to the channel quality indication fed back by a second device;
• a second device for obtaining a channel impulse response matrix experienced by the reference symbol transmitted from the first device from the reference symbol, and for obtaining the linear spatial domain pre-coding matrix of the candidate physical resource block used in transmitting data to the first device from the impulse response matrix, and for obtaining the channel quality indication of the corresponding candidate physical resource block from the channel impulse response matrix and the linear spatial domain pre-coding matrix, and for transmitting the channel quality indication to the first device.