Space-time scrambling for cellular systems

A method comprising:

• generating at least one stream of data symbols;
• performing space-time scrambling on the at least one stream of data symbols to generate at least two streams of output chips;
• and
• transmitting the at least two streams of output chips from at least two antennas to at least one receiver in a cellular system.

An apparatus comprising:

• means for generating at least one stream of data symbols;
• means for performing space-time scrambling on the at least one stream of data symbols to generate at least two streams of output chips;
• and
• means for transmitting the at least two streams of output chips from at least two antennas to at least one receiver in a cellular system.

A method comprising:

• generating at least one stream of data symbols for at least one terminal;
• mapping the at least one stream of data symbols to at least one physical channel;
• performing spreading for the at least one physical channel with at least one channelization code to generate at least one stream of data chips;
• and
• performing space-time scrambling on the at least one stream of data chips to generate at least two streams of output chips for transmission via at least two antennas.

An apparatus comprising:

• means for generating at least one stream of data symbols for at least one terminal;
• means for mapping the at least one stream of data symbols to at least one physical channel;
• means for performing spreading for the at least one physical channel with at least one channelization code to generate at least one stream of data chips;
• and
• means for performing space-time scrambling on the at least one stream of data chips to generate at least two streams of output chips for transmission via at least two antennas.

A method comprising:

• obtaining at least one stream of input samples for at least two streams of output chips received from a transmitter in a cellular system, wherein the at least two streams of output chips are generated at the transmitter by performing space-time scrambling on at least one stream of data symbols and are transmitted via at least two antennas at the transmitter;
• performing space-time descrambling on the at least one stream of input samples to obtain at least one stream of descrambled samples;
• and
• processing the at least one stream of descrambled samples to obtain an estimate of the at least one stream of data symbols.

An apparatus comprising:

• means for obtaining at least one stream of input samples for at least two streams of output chips received from a transmitter in a cellular system, wherein the at least two streams of output chips are generated at the transmitter by performing space-time scrambling on at least one stream of data symbols and are transmitted via at least two antennas at the transmitter;
• means for performing space-time descrambling on the at least one stream of input samples to obtain at least one stream of descrambled samples;
• and
• means for processing the at least one stream of descrambled samples to obtain an estimate of the at least one stream of data symbols.