Patent ID: 8331478

Claim:
A diversity transmission method for transmitting a low code rate spatially multiplexed channel on multiple antennas, comprising: receiving an indication of a spreading sequence; encoding a block of information bits to form channel coded bits, wherein the ratio R2 of the number of channel coded bits to the number of information bits is greater than one; mapping the channel coded bits to modulation symbols, wherein each channel coded bit is mapped once to a modulation symbol; multiplexing the modulation symbols to the multiple antennas; spreading the modulation symbols to be transmitted on a first antenna of the multiple antennas with the spreading sequence; spreading the modulation symbols to be transmitted on a second antenna of the multiple antennas with the spreading sequence; and transmitting the spread modulation symbols on the antennas to which they were multiplexed, wherein a single antenna transmission mode is additionally supported, comprising: transmitting on one antenna in the single antenna transmission mode of operation producing a second set of channel coded bits, wherein a second number of information bits in the single antenna transmission mode is the same as the number of information bits, and a third number of channel coded bits is produced, and the ratio of the third number of channel coded bits to the number of information bits is R1, and the ratio of R2 to R1 is greater than one, and all of the third set of channel coded bits are the same as a portion of the channel coded bits.