Signal emission by plural antennas

1. A method in a radio communication emitter for emitting a signal by at least two antennas, said signal including encoded bits that are converted into symbols distributed on subcarriers and in time intervals, said method including:

distributing a set of the signal symbols into as many disjoined subsets of signal symbols as said antennas that said emitter comprises, each subset being dedicated to one of said antennas, the union of said subsets being said set of said signal symbols, symbols being distributed in at least two subsets for at least one time interval, and symbols being distributed in at least two subsets for at least one subcarrier,

generating for each antenna a signal to be emitted including said symbols of said subset dedicated to said each antenna, said symbols of said subset being distributed on the same subcarriers and in the same time intervals as those of said signal, and

synchronously emitting, by a respective one of said antennas, the generated signals.

2. The method as claimed in claim 1 , comprising interleaving said encoded bits before conversion of said encoded bits into said signal symbols.

3. A method as claimed in claim 1 , wherein said subsets of symbols comprise a substantially identical number of symbols.

4. A method as claimed in claim 1 , wherein said subsets of symbols comprise a substantially identical number of symbols for each time interval of said signal.

5. A method as claimed in claim 1 , wherein said subsets of symbols comprise a substantially identical number of symbols for each subcarrier of said signal.

6. A radio communication emitter for emitting a signal by at least two antennas, said emitter being adapted to convert encoded bits in said signal into symbols distributed on subcarriers and in time intervals, said emitter including:

means for distributing a set of the signal symbols into as many disjoined subsets of signal symbols as said antennas that emitter comprises, each subset being dedicated to one of said antennas, the union of said subsets being the set of said signal symbols, symbols being distributed in at least two subsets for at least one time interval, and symbols being distributed in at least two subsets for at least one subcarrier;

means for generating for each antenna a signal to be emitted including said symbols of said subset dedicated to said each, said symbols of said subset being distributed on the same subcarriers and in the same time intervals as those of the signal; and

at least two antennas arranged to synchronously emit the respective, generated signals.

7. A computer-readable storage medium or a computer-readable device storing a program for causing a data processor arrangement in an emitter to convert encoded bits in a signal into symbols distributed on subcarriers and in time intervals and to emit said signal by at least two antennas, said program including program instructions for causing said data processor arrangement to execute the following steps when the storage medium or computer-readable device is loaded into and executed in said data processor arrangement:

distributing a set of the signal symbols into as many disjoined subsets of signal symbols as said antennas that said emitter comprises, each subset being dedicated to one of said antennas, the union of said subsets being said set of said signal symbols, symbols being distributed in at least two subsets for at least one time interval, and symbols being distributed in at least two subsets for at least one subcarrier;

generating for each antenna a signal to be emitted including said symbols of said subset dedicated to said each antenna, said symbols of said subset being distributed on the same subcarriers and in the same time intervals as those of said signal; and

synchronously emitting, by a respective one of said antennas, the generated signals.