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Signal processing apparatus and method

專利號
US11212702B2
公開日期
2021-12-28
申請人
SONY SEMICONDUCTOR SOLUTIONS CORPORATION（JP Kanagawa）
發(fā)明人
Seiji Kobayashi
IPC分類
H04W28/06; H04W28/04
技術領域
reception,signal,replica,unit,in,decoding,apparatus,step,processing,qd
地域： Kanagawa

摘要

The present technology relates to a signal processing apparatus and method which are able to suppress a reduction in reception sensitivity. A reception signal is compressed so as to have a predetermined signal level or lower, and transmission data transmitted from a transmitter side and included in the reception signal compressed so as to have the signal level or lower is decoded. For example, an approximate replica signal reproducing large amplitude changes of the reception signal is generated, and the approximate replica signal is subtracted from the reception signal to compress the reception signal so as to have the signal level or lower. The present disclosure is applicable to, for example, a signal processing apparatus, a reception apparatus, a transmission/reception apparatus, a communication apparatus, an information processing apparatus, an electronic device, a computer, a program, a storage medium, a system, and so on.

說明書

  • a determination unit configured to determine whether or not the envelope detection result of the reception signal obtained by the envelope detection unit exceeds the signal level, and

    • the subtraction unit is configured to subtract, as the approximate replica signal, a complex composition result of the phase detection result and the envelope detection result obtained by the complex composition unit from the reception signal, with respect to a portion of the reception signal with respect to which the determination unit has determined that the envelope detection result exceeds the signal level.

    (7) The signal processing apparatus as recited in (6), in which

    the approximate replica generation unit further includes an attenuation unit configured to attenuate an amplitude of the complex composition result at a predetermined attenuation factor, and

    the subtraction unit is configured to subtract, as the approximate replica signal, the complex composition result with the amplitude thereof attenuated at the attenuation factor by the attenuation unit from the reception signal, with respect to the portion of the reception signal with respect to which the determination unit has determined that the envelope detection result exceeds the signal level.

    (8) The signal processing apparatus as recited in (6), in which

    the approximate replica generation unit further includes a quantization unit configured to coarsely quantize an amplitude of the complex composition result, and

    權利要求

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