Systems methods circuits and apparatus for calibrating wireless communication systems

摘要

Disclosed are wireless communication systems and methods for calibrating same. The communication systems may include first wireless transceivers having: (a) a modem, and (b) one or more Radio Frequency (RF) chain pairs. There may also be included a sounding circuit block. A calibrated switchable bridging block (CSBB) may switchably couple signals between the first transceivers and the sounding circuit block. Calibration control logic may regulate signal flow through said CSBB during a sounding sequence of said first wireless transceiver and may apply compensation coefficients to RF compensation circuits functionally associated with said the wireless transceiver RF chain pairs.

主权项

1. A wireless communication system comprising:
one or more antenna elements; a first wireless transceiver comprising: (a) a modem, and (b) one or more Radio Frequency (RF) chain pairs, wherein at least one RF chain pair includes: (i) a receive chain (RX), and (ii) a transmit chain (TX); a sounding circuit block comprising: (a) a receive chain (RX), (b) a transmit chain (TX); and control circuitry adapted to coordinate: (1) reception of sounding signals from said first wireless transceiver, and (2) transmission of sounding signals to said first wireless transceiver; and a calibrated switchable bridging block (CSBB) switchably coupling signals between said first transceivers and said sounding circuit block, said CSBB comprising: a controllable signal switch having known channel characteristics between ports of said switch.