High rate, high diversity transmission on multiple transmit antennas

A method for transmitting data symbols from two antennas, comprising:

• first transmitting x1 from a first antenna and x2 from a second antenna at a first sample time;
• second transmitting −x2*+θx3 from said first antenna and x1*+θx4 from said second antenna at a second sample time;
• and
• third transmitting −x4* from said first antenna and x3* from said second antenna at a third sample time;
• wherein x1, x2, x3, and x4 are complex symbols, x* is the complex conjugate of x, and θ is a parameter that depends on a modulation constellation used to generate said symbols x1, x2, x3 and x4.

A communication device comprising:

• a constellation mapper to map a bit stream into complex symbols based on a predetermined modulation constellation, said complex symbols including at least symbols x1, x2, x3, and x4;
• and
• a space-time-frequency mapper to encode and map said complex symbols for transmission from first and second antennas, wherein said space-time-frequency mapper maps:
• (a) x1+θx3 to be transmitted from said first antenna and x2+θx4 to be transmitted from said second antenna at a first sample time using a predetermined subcarrier of a multicarrier signal and (b) −x2*−θx4* to be transmitted from said first antenna and x1*+θx3* to be transmitted from said second antenna at a second sample time using said predetermined subcarrier, where x* is the complex conjugate of x and θ is a parameter that depends on said predetermined modulation constellation.

A communication device comprising:

• first and second dipole antennas,
• a constellation mapper to map a bit stream into complex symbols based on a predetermined modulation constellation, said complex symbols including at least symbols x1, x2, x3, and x4;
• and
• a space-time-frequency mapper to encode and map said complex symbols for transmission from said first and second dipole antennas, wherein said space-time-frequency mapper maps:
• (a) x1+θx3 to be transmitted from said first dipole antenna and x2+θx4 to be transmitted from said second dipole antenna at a first sample time using a predetermined subcarrier of a multicarrier signal and (b) −x2*−θx4* to be transmitted from said first dipole antenna and x1*+θx3* to be transmitted from said second dipole antenna at a second sample time using said predetermined subcarrier, where x* is the complex conjugate of x and θ is a parameter that depends on said predetermined modulation constellation.

An article comprising a storage medium having instructions stored thereon that, when executed by a computing platform, operate to:

• transmit x1+θx3 from a first antenna and x2+θx4 from a second antenna at a first sample time;
• and
• transmit −x2*−θx4* from said first antenna and x1*+θx3* from said second antenna at a second sample time;
• wherein x1, x2, x3, and x4 are complex symbols, x* is the complex conjugate of x, and θ is a parameter that depends on a modulation constellation used to generate said symbols x1, x2, x3, and x4.

An article comprising a storage medium having instructions stored thereon that, when executed by a computing platform, operate to:

• transmit x1 from a first antenna and x2 from a second antenna at a first sample time;
• transmit −x2*+θx3 from said first antenna and x1*+θx4 from said second antenna at a second sample time;
• and
• transmit −x4* from said first antenna and x3* from said second antenna at a third sample time;
• wherein x1, x2, x3, and x4 are complex symbols, x* is the complex conjugate of x, and θ is a parameter that depends on a modulation constellation used to generate said data symbols x1, x2, x3, and x4.