Method and apparatus for information transmission in a radio communication system
A method of transmitting, by a transmitter, information in a wireless communication system, the method includes generating first and second symbols; generating first and second transmit vectors on the basis of an Alamouti code from the first and second symbols; and transmitting the first transmit vector through a first antenna and transmitting the second transmit vector through a second antenna. The first transmit vector consists of a first transmit symbol and a second transmit symbol. The second transmit vector consists of a third transmit symbol and a fourth transmit symbol. The first, second, third, and fourth transmit symbols are transmitted based on first and second resource indexes. The first symbol is a first modulation symbol for first information, and the second symbol is a second modulation symbol for second information.
1. A method of transmitting, by a transmitter, information in a wireless communication system, the method comprising:
generating a first transmit vector signal and a second transmit vector signal;
transmitting the first transmit vector signal through a first antenna; and
transmitting the second transmit vector signal through a second antenna,
wherein the first transmit vector signal consists of a first signal and a second signal, and
wherein the second transmit vector signal consists of a third signal and a fourth signal,
wherein the first transmit vector signal and the second transmit vector signal are transmitted in each signal frame,
wherein a control region of a signal frame includes control information for transmission of data and a number of OFDM symbols carrying the control information is variable, wherein the control information are transmitted by using cyclic shifted sequence.
2. The method of claim 1 , wherein a phase of the second transmit vector signal is rotated.
3. The method of claim 1 , wherein the each signal frame includes a plurality of OFDM symbols having data.
4. The method of claim 1 , wherein the first signal and the second signal are transmitted according to a transmission mode, wherein the transmission mode indicates either a single-antenna transmission or a multiple-antenna transmission.
5. An apparatus of transmitting, information in a wireless communication system, the method comprising:
a processor to generate a first transmit vector signal and a second transmit vector signal;
a first antenna to transmit the first transmit vector signal; and
a second antenna to transmit the second transmit vector signal through a second antenna,
wherein the first transmit vector signal consists of a first signal and a second signal, and
wherein the second transmit vector signal consists of a third signal and a fourth signal,
wherein the first transmit vector signal and the second transmit vector signal are transmitted in each signal frame,
wherein a control region of a signal frame includes control information for transmission of data and a number of OFDM symbols carrying the control information is variable, wherein the control information are transmitted by using a cyclic shifted sequence.
6. The apparatus of claim 5 , wherein a phase of the second transmit vector signal is rotated.
7. The apparatus of claim 5 , wherein the each signal frame includes a plurality of OFDM symbols having the data.
8. The apparatus of claim 5 ,
wherein the first signal and the second signal are transmitted according to a transmission mode, wherein the transmission mode indicates either a single-antenna transmission or a multiple-antenna transmission.