Methods, apparatus and systems using multi-set polarized beam-time shift keying (msp-btsk)

A method, implemented by a transceiver, of transmission via a plurality of beams, the method comprising:

• obtaining an input bit stream;
• bit mapping one or more bits of the input bit stream into at least a first stream and a second stream:
• generating one or more complex symbols using the first stream;
• selecting a space-time (ST) spreading codes from a plurality of ST spreading codes;
• applying the ST spreading codes to the one or more complex symbols to generate one or more ST codewords;
• selectively applying a polarization indicator to a subset of the ST codewords, wherein the polarization indicator is applied on condition that a criterion is satisfied;
• and
• transmitting the one or more ST codewords using the plurality of beams including the subset of the one or more ST codewords associated with at least one beam of the plurality of beams, and on the condition that the criterion is satisfied, including the applied polorization indicator.

A transceiver, comprising circuitry including a transmitter, a receiver, a processor and memory, and configured to transmit via a plurality of beams, the transceiver being configured for:

• obtaining an input bit stream;
• bit mapping one or more bits of the input bit stream into at least a first stream and a second stream;
• generating one or more complex symbols based on the first stream;
• selecting a space-time (ST) spreading codes from a plurality of ST spreading codes based on the second stream;
• applying the ST spreading codes to the one or more complex symbols to generate one or more ST codewords;
• assigning a first polarization indicator to a first subset of the plurality of beams and a second polarization indicator to a second subset of the plurality of beams, the first polarization indicator indicating a first polarization state of the first subset of the plurality of beams and the second polarization indicator indicating a second polarization state of the second subset of the plurality of beams;
• and
• transmitting the one or more ST codewords using the plurality of beams, wherein each beam of the first and second subsets of the plurality of beams respectively include the first and the second assigned polarization indicators.