Wireless interference mitigation
First Claim
Patent Images
1. An eNode B (“
- eNB”
) for interference mitigation in a wireless communication, the eNB comprising;
a modulator to receive user equipment (“
UE”
) data to be transmitted to a UE, the UE data representing data of a physical downlink control channel (“
PDCCH”
) or an enhanced physical downlink control channel (“
EPDCCH”
);
the modulator being configurable to operate according to a linear m-ary modulation constellation to modulate the data of the PDCCH or EPDCCH according to the linear m-ary modulation constellation and to output modulated data;
a resource mapper arranged to map the modulated data onto allocated subcarriers;
a subcarrier modulator to receive the mapped modulated data and output respective subcarriers associated with the mapped modulated data,wherein the linear m-ary modulation constellation comprises a set of constellation points that are all linearly disposed.
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Abstract
Embodiments can relate to an apparatus for interference mitigation in a wireless communication. The apparatus can comprise at least one processing element arranged to extract, from a received PDCCH or EPDCCH signal, modulated symbols; the modulated symbols having been modulated using a linear m-ary modulation constellation. The apparatus also comprises a demodulator to demodulate the extracted PDCCH or EPDCCH modulated symbols; the demodulator being operable to demodulate the extracted symbols according to the linear m-ary modulation constellation.
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Citations
30 Claims
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1. An eNode B (“
- eNB”
) for interference mitigation in a wireless communication, the eNB comprising;a modulator to receive user equipment (“
UE”
) data to be transmitted to a UE, the UE data representing data of a physical downlink control channel (“
PDCCH”
) or an enhanced physical downlink control channel (“
EPDCCH”
);
the modulator being configurable to operate according to a linear m-ary modulation constellation to modulate the data of the PDCCH or EPDCCH according to the linear m-ary modulation constellation and to output modulated data;a resource mapper arranged to map the modulated data onto allocated subcarriers; a subcarrier modulator to receive the mapped modulated data and output respective subcarriers associated with the mapped modulated data, wherein the linear m-ary modulation constellation comprises a set of constellation points that are all linearly disposed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- eNB”
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9. A user equipment (UE) comprising:
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a cyclic prefix remover to remove at least one cyclic prefix from a received signal;
the received signal being a downlink control signal comprising orthogonal frequency division multiplexing (“
OFDM”
) symbols modulated with a linear modulation constellation;
the cyclic prefix remover being arranged to output the OFDM symbols without the at least one cyclic prefix;a serial to parallel converter to receive the OFDM symbols and output an associated plurality of subcarriers; a transformer to Fourier transform the associated plurality of subcarriers to a further plurality of sub carriers; a resource selector to select one or more than one of the further plurality of subcarriers for demodulation and output any selected further subcarriers for demodulation; and a demodulator to demodulate any output selected further subcarriers according to the linear modulation constellation, wherein the linear modulation constellation comprises a plurality of linearly disposed points. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of demodulating a received physical downlink control channel (“
- PDCCH”
) or an enhanced physical downlink control channel (“
EPDCCH”
) signal comprising orthogonal frequency division multiplexing (“
OFDM”
) data modulated using a linear modulation constellation for interference mitigation;
the method comprising;receiving a PDCCH or EPDCCH signal comprising OFDM control data modulated using a linear modulation constellation; removing any cyclic prefixes associated with the OFDM control data; Fourier transforming the OFDM control data; and demodulating the Fourier transformed OFDM control data according to the linear modulation constellation and outputting corresponding data, the linear modulation constellation comprises I and Q components representing constellation points that are all linearly disposed. - View Dependent Claims (17)
- PDCCH”
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18. A non-transitory computer program product comprising machine-readable storage storing a computer program having instructions arranged, when executed, to cause an eNode B (“
- eNB”
) to;receive user equipment (“
UE”
) data to be transmitted to a UE, the UE data representing data of a physical downlink control channel (“
PDCCH”
) or an enhanced physical downlink control channel (“
EPDCCH”
);modulate the data of the PDCCH or EPDCCH according to a linear m-ary modulation constellation and to output modulated data; map the modulated data onto allocated subcarriers; and receive the mapped modulated data and output respective subcarriers associated with the mapped modulated data, wherein the linear m-ary modulation constellation comprises a set of constellation points that are all linearly disposed. - View Dependent Claims (19, 20, 21, 22, 23, 24)
- eNB”
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25. A non-transitory computer program product comprising machine-readable storage storing a computer program having instructions arranged, when executed, to cause a user equipment to:
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remove at least one cyclic prefix from a received signal;
the received signal being a downlink control signal comprising orthogonal frequency division multiplexing (“
OFDM”
) symbols modulated with a linear modulation constellation;output the OFDM symbols without the at least one cyclic prefix; receive the OFDM symbols and output an associated plurality of subcarriers; Fourier transform the associated plurality of subcarriers to a further plurality of subcarriers; select one or more than one of the further plurality of subcarriers for demodulation and output any selected further subcarriers for demodulation; and demodulate any output selected further subcarriers according to the linear modulation constellation, wherein the linear modulation constellation comprises a plurality of linearly disposed points. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification