Method and apparatus for multiplexing data and control information in wireless communication systems based on frequency division multiple access
An apparatus for transmitting data in a frequency division multiple access based communication system is disclosed. The apparatus includes a symbol block generator for generating a symbol block in a predetermined symbol block period within one TTI when control information to be transmitted exists in the TTI, an FFT unit for performing FFT on the symbol block, and an IFFT unit for performing IFFT on signals output from the FFT unit and then transmitting the signals. The symbol block includes the control information and data to be transmitted. The TTI includes multiple symbol block periods.
1. An apparatus for transmitting data in a frequency division multiple access based communication system, the apparatus comprising:
a symbol block generator for generating a symbol block in a symbol block period within one Transmission Time Interval (TTI) when control information to be transmitted exists in the TTI, wherein the symbol block comprises the control information and data to be transmitted and the TTI comprises multiple symbol block periods;
a Fast Fourier Transform (FFT) unit for performing FFT on the symbol block; and
an Inverse Fast Fourier Transform (IFFT) unit for performing IFFT on signals output from the FFT unit and then transmitting the signals.
2. The apparatus as claimed in claim 1 , wherein the control information comprises at least one of modulation information of the transmission data, channel coding information, symbol number-related information, and FFT mapping information.
3. The apparatus as claimed in claim 1 , wherein the symbol block generator generates symbol blocks comprising at least one of data and pilot signals in the other symbol block periods within the TTI.
4. A method for transmitting data in a frequency division multiple access based communication system, the method comprising:
generating a symbol block in a symbol block period within one Transmission Time Interval (TTI) when control information to be transmitted exists in the TTI wherein the symbol block comprises the control information and data to be transmitted and the TTI comprises multiple symbol block periods;
performing Fast Fourier Transform (FFT) on the symbol block; and
performing Inverse Fast Fourier Transform (IFFT) on the FFTed signals and then transmitting the IFFTed signals.
5. The method as claimed in claim 4 , wherein the control information comprises at least one of modulation information, channel coding information, symbol number-related information, and FFT mapping information.
6. The method as claimed in claim 4 , wherein, during the generating, symbol blocks comprising at least one of data and pilot signals are generated in the other symbol block periods within the TTI.