Abstract: A new watermarking concept is presented. The method exploits audio fingerprinting in order to reuse the same watermark payloads between audio copies originating from different audio masters. This is achieved by using fingerprints of audio master to derive unique watermarking zones for its associated copies, therefore obviating the need of adding overhead synchronization bits to locate watermark positions. Thanks to a shorter watermark payload enabling a higher repetition rate of the watermark within the host media, the present methods have been validated via simulations to be robust against typical audio attacks such as MP3 compression, cropping, jittering, and zeros inserting.

Abstract: A method is disclosed for mixed analog/digital beamforming in a wireless communication system having transmit and receive antennas and analog front-ends connected to either the transmit antennas or the receive antennas.

Abstract: A method of analog beamforming in a wireless communication system is disclosed. The system has a plurality of transmit antennas and receive antennas. In one aspect, the method includes determining information representative of communication channels formed between a transmit antenna and a receive antenna of the plurality of antennas, defining a set of coefficients representing jointly the transmit and the receive beamforming coefficients, determining a beamforming cost function using the information and the set of coefficients, determining an optimized set of coefficients by exploiting the beamforming cost function, and separating the optimized set of coefficients into optimized transmit beamforming coefficients and optimized receive beamforming coefficients.

Abstract: A method is disclosed for mixed analog/digital beamforming in a wireless communication system having transmit and receive antennas and analog front-ends connected to either the transmit antennas or the receive antennas.