space-diversity protected link

The directional antennas (310.1, 310.2, 310.n) may be further arranged to transmit with space or polarization diversity.

Spatially diverse signals (200) are simultaneously demodulated (210) and error corrected providing statistically independent data (220, 230).

When a signal is received, the outputs from all four antenna arrays (6, 8, 10, 12) are fed to a combiner arrangement (14, 16, 18) to produce a space-diversity and polarization-diversity gain.

The second antenna (300) has operating bands for implementing the space diversity in the receiving in accordance with two radio systems.

The mobile station uses the resulting space diversity effect to obtain diversity gain that enables an increase in the number of channels per area-unit, and thus an increase in traffic and spectrum efficiency.

A space diversity device is also disclosed in the present invention, and the device includes the following parts: orthogonal processing module, signal cyclic delay module and transmitting module.

Open loop phase estimation methods and apparatus for coherent combining of signals on mobile channels using spatially diverse antennas are disclosed.

The technique scheme can be combined with Hybrid Auto Retransmission Request (HARQ) and cooperation relay technique easily, and can realize the time and space diversity gain totally.

A smart antenna system may exploit space diversity by employing an array of antennas whose radiation pattern can be aligned in a direction of arrival (DoA) of a specific signal to be decoded.

A method (100, 800), access point device (200, 300, 500, 600) and a plurality of peripheral devices (400, 700) provide for controlling a space diversity switch in a time division duplex system.