Murata Manufacturing Co., Ltd.

Sychip Inc.

Yanbing Yu

Yujie Zhu

Kunquan Sun

Dong Yang

Yinon Degani

Chao Wang

Meng Zhao

Feng Mo

Moses Asom

Joe Ryan

Kangzheng Wang

Wei Liu

A method and apparatus for performing time synchronization and an OFDMA receiver thereof are provided. The method preferably includes performing a differential phase correlation in a frequency domain based on one received sequence and one reference preamble and detecting an integer frequency offset based on a result of the differential phase correlation. The method and apparatus advantageously enable the use of one OFDM symbol to estimate ICFO and the use of a simple method to facilitate ICFO detection. Moreover, the performance of the integer frequency offset estimation becomes more robust in high noise and time-variant fading channels, with reduced hardware complexity.

Method and apparatus for integer frequency offset estimation in wireless communication system

A method and apparatus for time synchronization and an OFDMA receiver thereof are provided. A preamble timing is obtained by a two-stage correlation in a time domain between a sequence of a received symbol and a reference preamble. The two-stage correlation is further simplified to perform a conjugate multiplication between a one-stage correlation and its correspondingly delayed result. A preamble boundary is adaptively determined by a peak value based on a result of the two-stage correlation. In this way, the time synchronization is achieved with a robust performance in a low SNR, high frequency offset or large delay spread fading channel.

Method and apparatus for accurate time synchronization in wireless communication system

A method for testing characteristics of a communication device that includes a plurality of modules using a test fixture includes the steps of connecting the communication device to the test fixture, determining if tests to be performed on the plurality of modules can be simultaneously performed, performing the tests to be performed on the plurality of modules for any tests that are determined can be simultaneously performed, calculating a numerical value for each of the plurality of modules if it is determined that the tests to be performed cannot be simultaneously performed, selecting one of the tests based on the calculated numerical value, and performing the selected one of the tests based on the calculated numerical value and suspending the test or tests on the remaining modules of the plurality of modules other than the selected one of the tests.

Multi-radio test method and test fixture

Multi-media Memory Card (MMC) devices, Secure Digital (SD) devices, and Secure Digital Input Output (SDIO) devices connected to a single host controller with signals multiplexed to allow simultaneous activation of more than one device at a time.

Sharing single host controller with multiple functional devices

The specification describes SDIO devices and SDIO cards wherein the SDIO devices are provided with enhanced functionality, and the SDIO cards are provided with enhanced IC capacity. A variety of multi-chip-module (MCM) approaches are used to increase the IC capacity of the SDIO card.

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Shanghai, China

Yanbing Yu