Method and apparatus to resist fading in mimo and simo wireless systems
AssigneesSony Corporation, Sony Electronics Inc.
InventorBehram Dacosta
Life of this patent
Estimating the term…
Abstract
In a wireless communication system the receiver includes a first plurality of receive chains and a second plurality of antennas. Each receive chain is selectively connectable to selected antennas. The antennas are selected based on criteria obtained from a received RF signal to produce an antenna configuration connected to the receive chains to reduce RF fading at the receiver. An electronic switch connects the antennas to the receive chains. The receiver is programmed to determine which antenna should be connected to each receive chain by the switch by measuring characteristics of the received signal for each allowed antenna configuration and selecting the best antenna configuration. Transmitters may be similarly configured.
Claims29
A wireless communication apparatus, comprising:
- a transmitter for transmitting an RF signal;
- a receiver for receiving the RF signal;
- at least one of the receiver and transmitter including a first plurality of chains and a second plurality of antennas;
- each chain being selectively connectable to selected antennas;
- the antennas being selected based on criteria obtained from a received RF signal to produce an antenna configuration connected to the chains to reduce RF fading at the receiver.
A wireless communication apparatus, comprising:
- a transmitter for transmitting an RF signal;
- a receiver for receiving the RF signal;
- the receiver including a first plurality of receive chains and a second plurality of antennas, or the transmitter including a third plurality of transmit chains and a fourth plurality of antennas, or both;
- means for selectively connecting each chain to selected antennas;
- and
- means for selecting the antennas to be connected to each chain based on criteria obtained from a received RF signal to produce an antenna configuration connected to the chains to reduce RF fading at the receiver.
A receiver for receiving RF signals from a transmitter in a wireless communication system, comprising:
- a first plurality of receive chains;
- a second plurality of antennas;
- each receive chain being selectively connectable to selected antennas;
- the antennas being selected based on criteria obtained from measuring a received RF signal for various antenna configurations to produce an antenna configuration connected to the receive chains to reduce RF fading at the receiver.
A method for reducing fading in a wireless communication system, comprising:
- providing a receiver having a first plurality of receive chains and a second plurality of antennas, or a transmitter having a third plurality of transmit chains and a fourth plurality of antennas, or both;
- selecting the best antenna to be connected to each chain based on criteria obtained from a received RF signal to produce an antenna configuration connected to the chains to reduce RF fading at the receiver;
- and
- connecting each chain to the selected antennas.
Dependencies are inferred from the claim text.