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Methods and apparatus are presented to provide transmit diversity gains to non-transmit diversity configured remote stations by correlating the magnitude of the interference between at least two antenna paths. A first time-varying transformation is applied to a stream of modulation symbols to form a

Methods and apparatus are presented to provide transmit diversity gains to non-transmit diversity configured remote stations by correlating the magnitude of the interference between at least two antenna paths. A first time-varying transformation is applied to a stream of modulation symbols to form a first transmission signal and a second time-varying transformation is applied to the stream of modulation symbols to form a second transmission signal, wherein the second time-varying transformation has a different relative phase from the first time-varying transformation.

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1. Apparatus for providing transmission diversity gains to a non-transmission diversity receiver, comprising:a switching apparatus for implementing at least two time-varying transformations to a single stream of modulation symbols so that the single stream of modulation symbols is transformed into a

1. Apparatus for providing transmission diversity gains to a non-transmission diversity receiver, comprising:a switching apparatus for implementing at least two time-varying transformations to a single stream of modulation symbols so that the single stream of modulation symbols is transformed into at least two time-varying streams of modulation symbols, wherein the single stream of modulation symbols is targeted for transmission to the non-transmission diversity receiver, and further wherein the at least two time-varying transformations provide transmission diversity gains in signal-to-noise ratio to the non-transmission diversity receiver; and at least two antennas for transmitting the at least two time-varying streams of modulations symbols to the non-transmission diversity receiver. 2. The apparatus of claim 1, wherein the switching apparatus comprises a sine wave generator and a cosine wave generator.3. The apparatus of claim 1, wherein the switching apparatus comprises at least two time-varying, saw-tooth wave generators.4. A method for providing transmission diversity gains to a non-transmission diversity receiver, comprising:implementing a first time-varying transformation to a stream of modulation symbols to form a first transmission signal, wherein the stream of modulation symbols is targeted for transmission to the non-transmission diversity receiver; implementing a second time-varying transformation to the stream of modulation symbols to form a second transmission signal, wherein the second time-varying transformation has a different relative phase from the first time-varying transformation, wherein the first time-varying transformation and the second time-varying transformation provide transmission diversity gains in signal-to-noise ratio to the non-transmission diversity receiver; and transmitting the first transmission signal and the second transmission signal to the non-transmission diversity receiver. 5. The method of claim 4, wherein the first time-varying transformation is a sine transformation and the second time-varying transformation is a cosine transformation.6. The method claim 4, wherein a relative phase between the sine transformation and the cosine transformation is one (1) cycle per frame.7. The method of claim 4, wherein the first time-varying transformation is a piece-wise linear transformation with a first phase and the second time-varying transformation is a piece-wise linear transformation with a second phase, wherein the first phase and the second phase are separated by 1 cycle per frame.8. Apparatus for providing transmission diversity gains to a non-transmission diversity receiver, comprising:means for implementing a first time-varying transformation to a stream of modulation symbols to form a first transmission signal, wherein the stream of modulation symbols is targeted for transmission to the non-transmission diversity receiver; means for implementing a second time-varying transformation to the stream of modulation symbols to form a second transmission signal, wherein the second time-varying transformation has a different relative phase from the first time-varying transformation, wherein the first time-varying transformation and the second time-varying transformation provide transmission diversity gains in signal-to-noise ratio to the non-transmission diversity receiver; and means for transmitting the first transmission signal and the second transmission signal to the non-transmission diversity receiver. 9. Apparatus for providing transmission diversity gains to a non-transmission diversity receiver, comprising:means for implementing at least two time-varying transformations to a single stream of modulation symbols so that the single stream of modulation symbols is transformed into at least two time-varying streams of modulation symbols, wherein the single stream of modulation symbols is targeted for transmission to the non-transmission diversity receiver, and further wherein the at least two time-varying transformations provide transmission diversity gains in signal-to-noise ratio to the non-transmission diversity receiver; and means for transmitting the at least two time-varying streams of modulations symbols to the non-transmission diversity receiver. 10. Apparatus for allowing non-transmission diversity remote stations to operate amidst transmission diversity remote stations in a transmission diversity system, comprising:a switching apparatus for implementing at least four time-varying transformations to streams of modulation symbols, wherein the first stream of modulation symbols is for a non-transmission diversity remote station and the remaining streams of modulation symbols are for a transmission diversity remote station, and further wherein the at least four time-varying transformations provide transmission diversity gains in signal-to-noise ratio to the non-transmission diversity receiver; and at least two antennas for transmitting the transformed streams of modulations symbols. 11. The apparatus of claim 10, wherein the at least four time-varying transformations are performed by at least two pairs of generators, wherein each pair comprise a sine wave generator and a cosine wave generator.12. The apparatus of claim 10, wherein the at least four time-varying transformations are performed by at least two pairs of generators, wherein each pair comprise two time-varying, saw-tooth wave generators.13. A method for allowing non-transmission diversity remote stations to operate amidst transmission diversity remote stations in a transmission diversity system, comprising:implementing a first time-varying transformation upon a primary stream of modulation symbols and a secondary stream of modulation symbols to form a part of a first transmission signal, wherein the primary stream of modulation symbols is for a non-transmission diversity remote station and the secondary stream of modulation symbols is for a transmission diversity remote station; implementing a second time-varying transformation upon the primary stream of modulation symbols and the secondary stream of modulation symbols to form a part of a second transmission signal, wherein the second time-varying transformation has a different relative phase from the first time-varying transformation; implementing a third time-varying transformation to a tertiary stream of modulation symbols to form another part of the first transmission signal, wherein the tertiary stream of modulation symbols is for the transmission diversity remote station; implementing a fourth time-varying transformation to the tertiary stream of modulation symbols to form another part of the second transmission signal; and transmitting the first transmission signal and the second transmission signal to the non-transmission diversity remote station and the transmission diversity remote station. 14. The method of claim 13, wherein the first and fourth time-varying transformations are a sine transformation and the second and third time-varying transformations are a cosine transformation.15. The method of claim 14, wherein the first time-varying transformation is a piece-wise linear transformation with a first phase, the second time-varying transformation is a piece-wise linear transformation with a second phase, the third time-varying transformation is a piece-wise linear transformation with a third phase, and the fourth time-varying transformation is a piece-wise linear transformation with a fourth phase.16. Apparatus for allowing non-transmission diversity remote stations to operate amidst transmission diversity remote stations in a transmission diversity system, comprising:means for implementing a first time-varying transformation upon a primary stream of modulation symbols and a secondary stream of modulation symbols to form a part of a first transmission signal, wherein the primary stream of modulation symbols is for a non-transmission diversity remote station and the secondary stream of modulation symbols is for a transmission diversity remote station; means for implementing a second time-varying transformation upon the primary stream of modulation symbols and the secondary stream of modulation symbols to form a part of a second transmission signal, wherein the second time-varying transformation has a different relative phase from the first time-varying transformation; means for implementing a third time-varying transformation to a tertiary stream of modulation symbols to form another part of the first transmission signal, wherein the tertiary stream of modulation symbols is for the transmission diversity remote station; means for implementing a fourth time-varying transformation to the tertiary stream of modulation symbols to form another part of the second transmission signal; and means for transmitting the first transmission signal and the second transmission signal to the non-transmission diversity remote station and the transmission diversity remote station. 17. Apparatus for allowing non-transmission diversity remote stations to operate amidst transmission diversity remote stations in a transmission diversity system, comprising:means for implementing at least four time-varying transformations to streams of modulation symbols, wherein the first stream of modulation symbols is for a non-transmission diversity remote station and the remaining streams of modulation symbols are for a transmission diversity remote station, and further wherein the at least four time-varying transformations provide transmission diversity gains in signal-to-noise ratio to the non-transmission diversity receiver; and means for transmitting the transformed streams of modulations symbols.