Infineon Technologies Ag

Intel Mobile Communications Gmbh

Steffen Buch

Stefan Van Waasen

Bin Yang

Holger Gryska

Tim Schoönauer

Jürgen Wondra

A method and device for transmitting audio data and text data to an RDS capable radio receiver by a wireless device is disclosed. The device includes a receiver for scanning a frequency range to detect an available radio frequency based on predetermined criteria. The device also includes a transmitter for transmitting data on a detected frequency that comprises RDS message data. Other systems and methods are also disclosed.

Frequency tracking for a FMR transmitter

A method and a circuit for the digital correction of a frequency of a signal, especially for use in a transmitter/receiver circuit include rotating a signal 'pointer' (i0, q0) using a CORDIC algorithm, through a predetermined angle in a complex I/Q plane corresponding to a correction frequency. The CORDIC algorithm includes micro-rotation blocks corresponding to N stages, and a character table and a register.

Method and circuit for digitally correcting the frequency of a signal

A digital comb filter contains filter stages. Each filter stage has a latch disposed at a filter stage input, which latch, by outputting each input data value twice in each case doubles the sampling rate. Each filter stage further has a filter structure, a partial transfer function {overscore (H)} (z) of which is {overscore (H)}(z)&#x3b1;(1+z), where k is an order of the filter device and zis the z transform of a delay by one sampling pulse. The implementation according to the invention does not require an error correction circuit.

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Munich, Germany

Steffen Buch