Data-modulated pilots for phase and gain detectors
AssigneeQUALCOMM Incorporated
InventorsMaxim Gotman, Ronen Greenberger, Ziv Alina
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Abstract
Methods, systems, and devices are described for mitigating an unwanted increase in a coding rate of a wireless communication signal. A plurality of symbols including a transmitted codeword is received. The plurality of symbols including a first group of data symbols with a first modulation and coding scheme and a second group of data modulated pilot symbols with a second modulation and coding scheme. Applicable demodulation schemes are adaptively switched for each group of the plurality of symbols. The second group of data modulated pilot symbols are used in lieu of pilot symbols. The second modulation and coding scheme is a more reliable modulation and coding scheme than the first modulation and coding scheme.
Claims20
A method for wireless communication, comprising:
- receiving a plurality of symbols comprising a transmitted codeword, the plurality of symbols including a first group of symbols comprising data symbols with a first modulation and coding scheme and a second group of symbols comprising data modulated pilot symbols with a second modulation and coding scheme, wherein the second group of data modulated pilot symbols are used in lieu of pilot symbols;
- adaptively switching between applicable demodulation schemes for the first group of symbols and the second group of symbols;
- performing hard decision decoding for the plurality of symbols;
- generating phase errors for the plurality of symbols using results of the hard decision decoding;
- and
- generating phase corrections for the plurality of symbols based at least in part on the generated phase errors.
A receiving device for wireless communication, comprising:
- a processor;
- memory in electronic communication with the processor;
- and
- instructions stored in the memory, the instructions being executable by the processor to:
- receive a plurality of symbols comprising a transmitted codeword, the plurality of symbols including a first group of symbols comprising data symbols with a first modulation and coding scheme and a second group of symbols comprising data modulated pilot symbols with a second modulation and coding scheme, wherein the second group of data modulated pilot symbols are used in lieu of pilot symbols;
- adaptively switch between applicable demodulation schemes for the first group of symbols and the second group of symbols;
- perform hard decision decoding for the plurality of symbols;
- generate phase errors for the plurality of symbols using results of the hard decision decoding;
- and
- generate phase corrections for the plurality of symbols based at least in part on the generated phase errors.
Dependencies are inferred from the claim text.