Method for transmitting uniformly distributed data in a MIMO telecommunication system

A telecommunication system including at least one transmitter provided with a plural number Nt of transmitting antennas and at least one receiver provided with at least one receiving antenna, which transmitter includes bit encoding means for generating encoded data bits, bit interleaving means for permutating said encoded data bits, and modulation means for producing symbols representative of the permutated bits, each symbol being represented by a predetermined number of bits intended to be transmitted over communication channels established between the transmitting and receiving antennas, which channels feature a predefined number Ni of channel inputs, system characterized in that the bit interleaving means include:

• bit demultiplexing means for dispatching a frame of encoded data bits into a number of bit sequences equal to the predefined number Ni of channel inputs,
• sequence interleaving means for permutating the bits of each bit sequence produced by the demultiplexing means, and
• sequence allocation means for forming groups of Nt interleaved bit sequences successively produced by the sequence interleaving means, all sequences of a same group being intended to be transmitted through Nt channels allocated to a same bit rank for all transmitting antennas.

A communication device provided with a plural number Nt of transmitting antennas, which transmitter includes bit encoding means for generating encoded data bits, bit interleaving means for permutating said encoded data bits, and modulation means for producing symbols representative of the permutated bits, each symbol being represented by a predetermined number of bits intended to be transmitted over communication channels established between the transmitting and receiving antennas, which channels feature a predefined number Ni of channel inputs, device characterized in that the bit interleaving means include:

• bit demultiplexing means for dispatching a frame of encoded data bits into a number of bit sequences equal to the predefined number Ni of channel inputs, by placing each jth encoded bit, modulo Ni, in a corresponding Njth bit sequence,
• sequence interleaving means for permutating the bits of each bit sequence produced by the demultiplexing means, and
• sequence allocation means for forming groups of Nt interleaved bit sequences successively produced by the sequence interleaving means, all sequences of a same group being intended to be transmitted through Nt channels allocated to a same bit rank for all transmitting antennas.