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 first and second symbols;
generating first and second transmit vectors based on the first and second symbols; and
transmitting a first signal including the first transmit vector through a first antenna and transmitting a second signal including the second transmit vector through a second antenna,
wherein the transmitting the first signal and the second signal is determined according to a transmission mode, wherein the transmission mode indicates either a single-antenna transmission or a multiple-antenna transmission,
wherein the first transmit vector consists of a first transmit symbol and a second transmit symbol, and
wherein the second transmit vector consists of a third transmit symbol and a fourth transmit symbol,
wherein the first transmit vector and the second transmit vector is transmitted through each frame including a control region and a data region having a plurality of OFDM symbols.
2. The method of claim 1 , wherein a phase of the first signal and the second signal is distorted.
3. The method of claim 1 , wherein the control region includes control information for transmission of data and a number of OFDM symbols carrying the control information is variable.
4. The method of claim 2 , wherein the control region includes control information for transmission of data and a number of OFDM symbols carrying the control information is variable.
5. The method of claim 1 , wherein the control region in each frame includes at least one resource being spread in a frequency domain, wherein the spread at least one resource is generated based on a specific sequences.
6. An apparatus of transmitting, by a transmitter, information in a wireless communication system, the apparatus comprising:
a modulator for generating a first symbol and a second symbol by modulating an information bit stream;
a space block coding (SBC) processor for generating a first transmit vector consisting of a first transmit symbol and a second transmit symbol and a second transmit symbol consisting of a third transmit symbol and a fourth transmit symbol based on the first and second symbols;
a first antenna for transmitting a first signal including the first transmit vector; and
a second antenna for transmitting a second signal including the second transmit vector,
wherein the transmitting the first signal and the second signal is determined according to a transmission mode, wherein the transmission mode indicates either a single-antenna transmission or a multiple-antenna transmission,
wherein the first transmit vector and the second transmit vector is transmitted through each frame including a control region and a data region having a plurality of OFDM symbols.
7. The apparatus of claim 6 , wherein a phase of the first signal and the second signal is distorted.
8. The apparatus of claim 6 , wherein the control region includes control information for transmission of data and a number of OFDM symbols carrying the control information is variable.
9. The apparatus of claim 8 , wherein the control information further includes coding and modulation information.
10. The transmitter of claim 9 , wherein a phase of the first signal and the second signal is distorted.