Iterative multi-level equalization and decoding
AssigneeCohere Technologies, Inc.
InventorsShachar Kons, Ronny Hadani, Christian Ibars Casas
Life of this patent
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Abstract
A wireless communication method for transmitting wireless signals from a transmitter includes receiving information bits for transmission, segmenting the information bits into a stream of segments, applying a corresponding forward error correction (FEC) code and an interleaver to each of the stream of segments and combining outputs of the interleaving to generate a stream of symbols, processing the stream of symbols to generate a waveform, and transmitting the waveform over a communication medium.
Claims20
A wireless communication method for transmitting orthogonal time frequency space (OTFS) modulated wireless signals from a transmitter, comprising:
- receiving information bits for transmission;
- segmenting the information bits into a stream of segments;
- applying a corresponding forward error correction (FEC) code to each of the stream of segments and combining outputs of the FECs to generate a stream of symbols;
- processing the stream of symbols to generate a waveform;
- and
- transmitting the waveform over a communication medium.
A wireless communication method, implemented at a receiver-side, for receiving a signal comprising multiple symbols;
- comprising:
- performing channel equalization on the signal to generate a channel equalized signal;
- logically dividing the channel equalized signal into a first number of segments, wherein the number of segment is equal to a second number of segments used at a transmitter-side to generate the signal;
- demodulating and symbol de-mapping the channel equalization signal in successive steps such that each step operates to recover one or more bits of one of the number of the segments to generate a demodulated bitstream;
- wherein an order in which the successive steps are performed depends on a reliability of success of recovering the one or more bits in each of the successive steps;
- processing the demodulated bitstream to generate information related to the bits from the signal;
- and
- providing a feedback signal to the channel equalization operation based on the processing of the demodulated bitstream.
A wireless communication device comprising a processor configured to implement a method comprising:
- receiving information bits for transmission;
- segmenting the information bits into a stream of segments;
- applying a corresponding forward error correction (FEC) code to each of the stream of segments and combining outputs of the FECs to generate a stream of symbols;
- processing the stream of symbols to generate a waveform;
- and
- causing transmission of the waveform over a communication medium.
A wireless communication device comprising a processor configured to implement a method comprising:
- performing channel equalization on the signal to generate a channel equalized signal;
- logically dividing the channel equalized signal into a first number of segments, wherein the number of segment is equal to a second number of segments used at a transmitter-side to generate the signal;
- demodulating and symbol de-mapping the channel equalization signal in successive steps such that each step operates to recover one or more bits of one of the number of the segments to generate a demodulated bitstream;
- wherein an order in which the successive steps are performed depends on a reliability of success of recovering the one or more bits in each of the successive steps;
- processing the demodulated bitstream to generate information related to the bits from the signal;
- and
- providing a feedback signal to the channel equalization operation based on the processing of the demodulated bitstream.
Dependencies are inferred from the claim text.