Abstract:
An apparatus, comprising a receiver configured to receive a primary signal that comprises a narrowband noise component and a broadband noise component, a processor coupled to the receiver and configured to determine, in a time domain, an estimate of the narrowband noise component in real-time, determine a cancelled output signal in real-time that comprises an estimate of the broadband noise component, and determine an estimate of a power level of the narrowband noise component in real-time.
Abstract translation:一种装置,包括:接收器,被配置为接收包括窄带噪声分量和宽带噪声分量的主信号;处理器,耦合到所述接收器并且被配置为在时域中确定估计值 实时地确定包括宽带噪声分量的估计的实时消除的输出信号,并且实时确定窄带噪声分量的功率电平的估计。 p >
Abstract:
Systems and methods are disclosed that may detect a likely presence of a narrow band signal in the presence of wide-band interference without powering up a wireless receiver. A wireless device may receive a wireless signal, measure a first energy level in a first frequency band associated with an expected frequency band of the narrow band wireless signal, measure a second energy level in a second frequency band that is offset from and non- overlapping with the first frequency band, and determine whether a difference between the first energy level and the second energy level exceeds a threshold. A wireless receiver of the wireless device may be powered up based at least in part on the difference between the first energy level and the second energy level exceeding the threshold.
Abstract:
A method of enhancing wireless communication performance includes receiving information indicative of a local interferer where the local interferer is identified based on dynamic position information indicative of a position of at least one mobile communication node, performing noise cancellation relative to a received signal by removing an interference signal associated with the local interferer to generate a scrubbed signal, and providing the scrubbed signal for additional signal processing.
Abstract:
Method for capturing a high dynamic range signal includes: receiving the wideband analog signal; digitizing the wideband signal by a wideband ADC; detecting N strongest sub-bands in the digitized wideband analog signal; adaptively programming N bandstop filters to block the detected N strongest sub-bands from being digitized by the wideband ADC; adjusting a gain of output signals of the N bandstop filters to amplify said output signals; digitizing the amplified output signals by the wideband ADC to obtain a first digitized signal; adaptively programming N passband filters to pass the detected N strongest sub-bands to N ADCs, respectively; digitizing the detected strongest N sub-band signals output from the N pass-band filters by the respective N ADCs to obtain a plurality of second digitized signals; and processing the first digitized signal and the plurality of second digitized signals to identify any duplicate bands.
Abstract:
A method of FSK decoding includes generating a pulse waveform (R'Edge) from a received FSK encoded signal (FSK signal) (101) and a system clock (Sys_clk). From R'Edge and Sys_clk clocks are generated by clock generator (115) including a first clock and second clock framing a logic '0' level of the FSK signal, and a third clock and fourth clock framing a logic '1' level of the FSK signal. At least four frequency envelops are generated from the clocks by envelop generator (120) including a logic '0' envelop, a logic '1' envelop, a lower frequency envelop below the logic '0' envelop, and an upper frequency envelop above the logic '1' envelop. R'Edge is compared to the four envelops by comparator (125), and a decoded output (130) is produced, logic '0' if the R'Edge overlaps the logic '0' envelop, logic '1' if R'Edge overlaps the logic '1' envelop, and a previous output state if R'Edge does not overlap the logic '0' or logic '1' envelop.
Abstract:
The present invention relates to a receiver device and a method thereof. The present method 200 comprises the major steps of: Receiving a communication signal CS; Identifying a plurality of interferers n = 1,..., Ν in the communication signal CS; At iteration i = 1 for interferer n = 1 obtain a covariance estimate for interferer n = 1 (See Fig.2B); At iteration i = 1 for interferers n = 2,..., N : obtain a covariance estimate for interferer n = 2,..., N (see Fig.2C); At iteration i = 2,..., I for the plurality of interferers n = 1,.,., Ν : obtain at least one covariance estimate for interferer n = 1,..., N at iteration i = 2,..., I (see Fig. 2D); Computing (212) the total covariance estimate Ryy for the communication signal CS based on the covariance estimates for the plurality of interferers n = 1,.,., Ν at iteration i = I > 1. Furthermore, the present invention also relates to a computer program, and a computer program product.