Motorola Corporation

Lsi Corporation

Agere Systems Inc.

Yunxin Li

Xiaojing Huang

Mark Andrew Bickerstaff

Graeme Woodward

Darryn Lowe

A method includes storing at least one user datum received from a user in a secure storage portion of a memory within a mobile communication device. Authentication information is received into the mobile communication device. The at least one user datum is transmitted from the mobile communication device to a recipient in response to entry of the authentication information, while preventing the user of the mobile communication device from reading the at least one user datum.

Information security and delivery method and apparatus

In one embodiment, a demapper uses two hybrid-QPSK constellations to demap pairs of equalized data symbols recovered from 16-QAM, DCM OFDM symbols, wherein the equalized data symbols in a pair correspond to the same four-bit group. A first hybrid-QPSK constellation is generated by combining the real components of both 16-QAM mapping constellations onto one coordinate plane. The demapper generates a first set of two decision variables by combining the real components of each equalized data symbol in a pair to correspond to the first hybrid-QPSK coordinate plane. A log-likelihood ratio is then calculated for both decision variables in the set to determine likelihood estimates for the first and second bits of the four-bit group. This process is repeated for the imaginary components of each corresponding pair of equalized data symbols to generate likelihood estimates for the third and fourth bits of the four-bit group.

Demodulation of 16-QAM, DCM data symbols using two hybrid-QPSK constellations

A filter bank () and receiver including the filter bank () that is designed for processing a baseband signal of a received continuous phase modulated signal S(t) with an integer modulation index. The filter bank () has outputs for providing a plurality of decision variable values (d,d,d,d) each representing a likelihood value of a symbol, from a group of predefined symbols that are likely to be present in the continuous phase modulated signal S(t). The filter bankhas filter units () each having an impulse response determined by a complex main pulse containing a majority of signal energy of one of the predefined symbols that is likely to be in the continuous phase modulated signal S(t).

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Ryde, Australia

Yunxin Li