Method and Apparatus for Reducing the Interferences Between a Wideband Device and a Narrowband Interferer
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Abstract
A method includes a main interference reduction mode for reducing the interference generated by a wideband device toward a narrowband device. The main interference reduction mode is performed within the wideband device and includes at least one of detecting an emission from and a reception performed by the narrowband device. A group of at least one sub-carrier having frequencies interfering with frequencies used by the narrowband device is determined from the detection step. The bits of the punctured stream that correspond to the information carried by the interfering sub-carriers of the group are determined and processed so that the processed bits are mapped into a reference symbol having an amplitude within a threshold of zero.
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Citations
107 Claims
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1-52. -52. (canceled)
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53. A method for reducing interference between a main device that transmits information on sub-carriers having frequencies belonging to a main band of frequencies, the information based upon symbols obtained by a mapping of a punctured stream of bits according to a modulation mapping scheme, and at least one auxiliary device that at least one of emits and receives information within an auxiliary band of frequencies, the auxiliary band of frequencies being narrower than the main band and included within the main band, the method comprising:
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performing a main interference reduction mode within the main device and comprising a detection step for detecting at least one of an emission from and a reception performed by the at least one auxiliary device; determining from the detection step at least one interfering sub-carrier interfering with the auxiliary band of frequencies; determining bits of the punctured stream of bits which correspond to the information carried by the at least one interfering sub-carrier; and processing the determined bits to generate processed bits mapped to a reference symbol having an amplitude within a threshold of zero. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79)
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80. A wireless communication apparatus comprising:
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a main device comprising a main transmission chain including puncturing circuitry to deliver a punctured stream of bits, mapping circuitry to map symbols from the punctured stream of bits in accordance with a modulation scheme, a transmission stage to transmit information issued from the symbols on sub-carriers having frequencies belonging to a main band of frequencies, main interference reduction circuitry to reduce interference generated by a main device toward at least one auxiliary device that at least one of emits and receives auxiliary information within an auxiliary band of frequencies, the auxiliary band of frequencies being narrower than the main band of frequencies and included within the main band of frequencies, said main interference reduction circuitry comprising main detection circuitry to detect at least one of an emission from and a reception performed by the at least one auxiliary device, a main control unit coupled to the main detection circuitry to determine at least one interfering sub-carrier interfering with the auxiliary band of frequencies and determining bits of the punctured stream of bits which correspond to information carried by the at least one interfering sub-carrier, and a main processing unit to process determined bits and map processed bits into a reference symbol having an amplitude within a threshold of zero. - View Dependent Claims (81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107)
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Specification