Abstract: In various implementations, method is provided for reducing noise in a pilot signal, which may include sampling the pilot signal and creating a first data set comprising the samples of the pilot signal samples. It may also include selecting a first subset from the first data set and averaging the first subset to produce a first tier averaged output of the selected first subset. It may further include creating a second data set of the first tier averaged outputs and selecting a second subset from the second data set and averaging the second subset to produce the pilot signal output. In various embodiments, this method may further include, or separately include generating the pilot signal with a modulation rate within an allowable range and offset from a central modulation rate of the allowable range.

Abstract: A radio frequency (RF) front-end (30) employed in a dual-mode transceiver module connects a first and a second dual-band antennas (40a, 40b), and includes a first and a second signal receiving paths for receiving RF signals in two different frequency bands, a first and second signal transmitting paths for transmitting RF signals in the two different frequency bands, and a switch unit connecting the first and second dual-band antennas with the first and second signal transmitting and receiving paths. The switch unit includes a double pole double throw (DPDT) switch (31) and two single pole double throw (DPDT) switches (32, 33). The switch unit performs an antenna selection function for both the first and second transmitting paths and the first and second receiving paths.

Abstract: A dual-mode WLAN module includes two dual-band antennas (43a, 43b), an RF front-end circuit (4), a dual-mode radio frequency integrated circuit (RFIC) chip (3), a dual-mode Base-Band integrated circuit chip (2), and an interface (mini-PCI, PCI, USB etc.) connecting to a computer (1). The RF front-end circuit for dual-mode WLAN module comprises two transmitting circuits, two receiving circuits, switch units, and logic control circuit (40) for controlling the operation of transmitting/receiving selection and antenna diversity selection.

Abstract: A dual-mode Wireless Local Area Network (WLAN) module installed in an electronic device (600) for wireless communication with other electronic devices includes an RF front-end unit (30), two dual-band antennas (40) coupled to the RF front-end unit, a dual-band radio frequency integrated circuit (RFIC) (20) coupled to the RF front-end unit, a dual-band base-band integrated circuit (BBIC) (10) coupled to the RFIC, and an interface unit coupled to both the BBIC and a computer (600). The RF front-end consists of transmitting and receiving paths. The RF front-end unit has antenna diversity control switching circuits (31, 33) for selecting an appropriate antenna and switching circuits (32, 34, 35, 36) for controlling ON/OFF states of transmitting/receiving paths of the RF front-end unit.