摘要:
A method of decoding a polar coded signal includes determining channel reliabilities for a plurality of polar coded bit channels in a data communication system including a plurality of frozen bit channels and non-frozen bit channels, selecting a frozen bit channel, calculating a likelihood value for a bit estimate associated with the frozen bit channel, generating a hard decision value for the bit estimate in response to the likelihood value, comparing the hard decision value for the bit estimate to a known value of a frozen bit transmitted on the frozen bit channel, in response to determining that the hard decision value for the bit estimate differs from the known value of the frozen bit transmitted on the frozen bit channel, updating an accumulated uncertainty, comparing the accumulated uncertainty to a threshold, and determining that a decoding error has occurred in response to the comparison.
摘要:
A method includes sending, by a user device, a plurality of data access requests to storage units. The method further includes sending, by one the storage units, an authentication request to an authenticating module. The method further includes forwarding, by the one of the storage units, a verification request to the user device. The method further includes forwarding, by the one of the storage units, a verification response to the authenticating module. The method further includes executing, by at least some of the storage units, corresponding ones of the plurality of data access requests when an authentication response of the authenticating module is favorable.
摘要:
Embodiments of the present invention disclose a method and an apparatus for compensating for a voice packet loss, which are used to compensate for a lost voice packet. The method in the embodiments of the present invention includes: extracting a pitch period from received voice data when a lost frame is detected; calculating a backward phase of a last received frame of normal voice data; calculating a forward phase of the lost frame according to the backward phase; capturing, from the received data, data whose last frame is with a same phase as the forward phase, as compensation data.
摘要:
A method and a device for transmitting and receiving data in a wireless communication system are disclosed. In an embodiment the method includes receiving transmission data, dividing the received transmission data into K>1 data streams, where K is a positive integer, feeding each data stream into its associated parallel processing path so as to obtain K modulated data packets j=1, . . . , K from the parallel processing paths, wherein in each processing path the method further includes segmenting the data stream, encoding the segmented data stream with a first error detection code and modulating the error detection encoded segmented data stream so as to obtain a modulated data packet j comprising a plurality of modulated symbols. The method further includes multiplexing the K modulated data packets so that at least one modulated symbol of each modulated data packet j are placed in proximity to each other in time and/or frequency.
摘要:
A circuit and a method are used estimate quality of the output of a wireless receiver. This quality measure is used to control the supply voltage and thereby provide power savings.
摘要:
A method includes sending, by a user device, a plurality of data access requests to storage units. The method further includes sending, by one the storage units, an authentication request to an authenticating module. The method further includes forwarding, by the one of the storage units, a verification request to the user device. The method further includes forwarding, by the one of the storage units, a verification response to the authenticating module. The method further includes executing, by at least some of the storage units, corresponding ones of the plurality of data access requests when an authentication response of the authenticating module is favorable.
摘要:
A method begins by a data accessing module of a dispersed storage network (DSN) sending a data access request to a data storage module. The method continues with the data storage module sending an authentication request to an authenticating module. The method continues with the authenticating module outputting a verification request destined for the data accessing module, wherein the verification request includes a verification code that is generated based on the authentication request. The method continues with the data accessing module outputting a verification response that includes a modified verification code that is generated based on the verification code and a credential. The method continues with the authenticating module outputting an authentication response to the data storage module, wherein the authentication response is generated based on the verification response. The method continues with the data storage module facilitating the data access request when the authentication response is favorable.
摘要:
A method for sending an acknowledgment message in a wireless communication system is disclosed. A first signal is received before receiving a second signal from a transmitter. Decoded first data is extracted from the first signal. A third signal is produced by encoding and modulating the decoded first data. The second signal is demodulated to produce second symbols. The third signal and the second symbols are correlated.
摘要:
Various embodiments provide for systems and methods for signal conversion of one modulated signal to another modulated signal using demodulation and then re-modulation. According to some embodiments, a signal receiving system may comprise an I/Q demodulator that demodulates a first modulated signal to an in-phase (“I”) signal and a quadrature (“Q”) signal, an I/Q signal adjustor that adaptively adjusts the Q signal to increase the signal-to-noise ratio (SNR) of a transitory signal that is based on a second modulated signal, and an I/Q modulator that modulates the I signal and the adjusted Q signal to the second modulated signal. To increase the SNR, the Q signal may be adjusted based on a calculated error determined for the transitory signal during demodulation by a demodulator downstream from the I/Q modulator.
摘要:
A method to authenticate a data access request begins by a data accessing module sending the data access request to a data storage module and continues with the data storage module sending an authentication request to an authenticating module. The method continues with the authenticating module outputting a verification request destined for the data accessing module, where the verification request includes a verification code that is generated based on the authentication request. The method continues with the data accessing module outputting a verification response that includes a modified verification code that is generated based on the verification code and a credential. The method continues with the authenticating module outputting an authentication response to the data storage module, where the authentication response is generated based on the verification response, and continues with the data storage module facilitating the data access request when the authentication response is favorable.