Multiple-input multiple-output OFDM systems
First Claim
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1. A method of processing a series of data bits for transmission on a transmit link, the method comprising:
- mapping said series of data bits to a series of data symbols;
demultiplexing said series of data symbols to a plurality of substreams of symbols;
frequency precoding each said substream of symbols;
modulating each said frequency precoded substream of symbols to a corresponding series of OFDM symbols; and
space precoding said plurality of series of OFDM symbols to form one or more series of space precoded OFDM symbols,wherein said demultiplexing is dependent on channel state information for said transmit link.
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Abstract
Disclosed is a method of processing a series of data bits for transmission on a transmit link, the method comprising mapping the series of data bits to a series of data symbols; demultiplexing the series of data symbols to a plurality of substreams of symbols; modulating each substream of symbols to a corresponding series of OFDM symbols; and space precoding the plurality of series of OFDM symbols to form one or more series of space precoded OFDM symbols, wherein the demultiplexing is dependent on channel state information for the transmit link.
20 Citations
15 Claims
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1. A method of processing a series of data bits for transmission on a transmit link, the method comprising:
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mapping said series of data bits to a series of data symbols; demultiplexing said series of data symbols to a plurality of substreams of symbols; frequency precoding each said substream of symbols; modulating each said frequency precoded substream of symbols to a corresponding series of OFDM symbols; and space precoding said plurality of series of OFDM symbols to form one or more series of space precoded OFDM symbols, wherein said demultiplexing is dependent on channel state information for said transmit link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of processing one or more series of OFDM symbols, comprising:
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demodulating each said series of OFDM symbols to a corresponding series of space and frequency precoded data symbols; equalising said one or more series of space and frequency precoded data symbols to form one or more substreams of frequency precoded data symbols; frequency decoding each said substream of frequency precoded data symbols to a series of data symbols; and de-mapping said one or more series of data symbols to a series of data bits. - View Dependent Claims (11, 12, 13)
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14. A processing device, comprising:
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a symbol mapping module adapted to map a series of data bits to a series of data symbols; a demultiplexing module adapted to demultiplex said series of data symbols to a plurality of substreams of symbols; one or more frequency precoding modules adapted to frequency precode said substreams of symbols into one or more frequency precoded substreams of symbols; one or more modulation modules, each adapted to modulate one said frequency precoded substream of symbols to a corresponding series of OFDM symbols; and a space precoding module adapted to space precode said plurality of series of OFDM symbols to form one or more series of space precoded OFDM symbols, wherein said demultiplexing module receives channel state information for a transmit link.
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15. A processing device, comprising:
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one or more demodulation modules, each adapted to demodulate a series of OFDM symbols to a corresponding series of space and frequency precoded data symbols; an equalisation module adapted to equalise said one or more series of space and frequency precoded data symbols to form one or more substreams of frequency precoded data symbols; one or more frequency decoding modules, each adapted to frequency decode one said substream of frequency precoded data symbols to a series of data symbols; a de-mapping module adapted to de-map said one or more series of data symbols to a series of data bits.
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Specification