Method and apparatus for modulating baseband signal in beam space multi-input multi-output, and method for receiving therein
AssigneeElectronics and Telecommunications Research Institute
InventorDuk Hyun YOU
Life of this patent
Estimating the term…
Abstract
A modulation method of a baseband signal, an apparatus thereof, and a receiving apparatus thereof in a beam space MIMO are disclosed. The baseband signal modulation apparatus may calculate a load value of a plurality of antenna elements by using the baseband signal. Also, the baseband signal modulation apparatus may change the phase or the magnitude for the baseband signal or a first band signal of a higher frequency than the baseband signal by corresponding to the frequency of the baseband signal.
Claims20
A baseband modulation apparatus comprising:
- an antenna array including a plurality of antenna element and irradiating a beam space MIMO (Multi-Input Multi-Output) signal;
- a baseband unit generating a baseband signal;
- a band converter converting the baseband signal into a first band signal of a higher frequency than the frequency of the baseband signal;
- a load calculator calculating a load value of the plurality of antenna elements by using the baseband signal and setting the calculated load value to the antenna array;
- a signal changing controller setting a changing value for at least one value among the phase and the magnitude of the baseband signal by corresponding to the frequency of the baseband signal;
- and
- a signal change unit signal-changing at least one among the baseband signal and the first band signal by corresponding to the changing value.
A baseband modulation apparatus comprising:
- an antenna array including a plurality of antenna element and irradiating a beam space MIMO (Multi-Input Multi-Output) signal;
- a baseband unit generating a baseband signal;
- a band converter converting the baseband signal into a first band signal of a higher frequency than the frequency of the baseband signal;
- a load calculator calculating a first load value as a load value of the plurality of antenna element so that at least one of a phase change and a magnitude change of the antenna signal irradiated through the antenna array is the same for each frequency of each baseband signal and setting the first load value to the antenna array.
A receiving method in a receiving apparatus of a beam space MIMO (Multiple Input Multiple Output) system, comprising:
- performing entire beam scanning and communication by sequentially forming a beam corresponding to an entire Beam Basis pattern during one corresponding symbol duration if a predetermined event is generated;
- and
- performing effective beam communication by reducing a number of the Beam Basis patterns used for the communication by using a result that the entire beam scanning and communication is performed in the rest of the symbol duration except for the symbol duration where the entire beam scanning and communication is performed.
Dependencies are inferred from the claim text.