A piezoelectric switch including a casing for receiving an external mechanical force, a piezoelectric ceramic for sensing the external mechanical force received by the casing and converting the force to an electrical signal, the ceramic having one side connected to the casing and another side having ...
For a given decision order, MMSE successive interference cancellation (MMSE-SIC) can simultaneously maximize SIRs of all users. To further increase its efficiency, a power control (PC) algorithm, under equal BER criterion, is disclosed for uplink MC-CDMA. In frequency-selective Rayleigh fading chann ...
This invention relates to a system and method utilizing a receiver architecture with a set of at least two antennae followed by a Rake demodulator at a mobile station for interference cancellation and diversity combining. Such a structure can work well only when the channel vector of desired signal ...
A signal scrambling method based on combined symbol rotation and inversion (CSRI) for the peak-to-average power ratio (PAPR) reduction of OFDM signals. By dividing OFDM sequences into subblocks and performing symbol rotation and inversion in each subblock, high degrees of freedom are available to of ...
An acceleration vector activated system to be used in vehicles in association with brake lights and the acceleration pedal, comprises: (a) acceleration vector sensing apparatus connected to the acceleration pedal, to generate a signal proportional to the acceleration vector of the accelerator pedal; ...
A vehicle deceleration warning apparatus for use in a vehicle having brake lights, a floorboard and an accelerator pedal, the system including a piezoelectric sensor element connected to one of the accelerator pedal or the floorboard for outputting a first signal when subjected to appropriate stress ...
A signal scrambling method is provided for peak-to-average power ratio (PAPR) reduction of STBC MIMO-OFDM signals in a MIMO-OFDM system having Y transmit antenna. In general terms the OFDM sequence of symbols in said signal for each transmit antenna is divided into M sub-blocks of equal size and sub ...
A method is provided for ordering retransmissions in a Multi-Input Multi-Output (MIMO) system using N×M antennas. A transmitter splits a coded data stream into N sub-packets, and transmits the N sub-packets to a receiver via N transmission antennas. The receiver removes interferences of the N sub-pa ...
In one embodiment, a cognitive radio system includes a first transmitter in communication with a first receiver via a wireless channel. The first transmitter receives a plurality of first packets, and transmits the first packets to the first receiver via the channel. A second transmitter in communic ...
A piezoelectric switch (20) including a casing (22) for receiving an external mechanical force, a piezoelectric ceramic (24) for sensing the external mechanical force received by the casing and converting the force to an electrical signal, the ceramic having one side connected to the casing and anot ...
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