Spreadtrum Communications (Shanghai) Co., Ltd.

Yongfang Zhou

Xiaojian Dong

Fajun Yan

An initial cell searching method includes: receiving at least one frame data sequence including synchronization channel signals; performing a correlation process between all synchronization sequences stored in user equipment and the received at least one data sequence to obtain correlation sequences, and calculating correlation power sequences corresponding to each of the correlation sequences; searching a highest peak and a secondary peak for each of the correlation power sequences, and recording the highest peak and corresponding position and the secondary peak and corresponding position; and determining a target cell ID based on a first target sequence. which corresponds to a synchronization sequence corresponding to a correlation power sequence of which a relative distance between the corresponding position of the highest peak and the corresponding position of the secondary peak meets a condition, and the highest peak of the correlation power sequence has a maximum peak value among highest peaks of all the correlation power sequences.

User equipment, initial cell searching method and apparatus thereof

An OFDM communication system, a method and a device for transceiving signal are provided. The method includes: dividing M transmitting antennas into one or more groups to form U transmitting ports, wherein transmitting antennas in different groups are uncorrelated, and M is greater than or equal to U; forming P data flows using a Multiple-Input Multiple-Output (MIMO) mode, wherein P=U/2, and P is less than or equal to a number of receiving ports; and mapping a group of 2P modulation symbols, including two modulation symbols of each data flow, to a resource element pair to form Space Frequency Block Code (SFBC) coding relationships with each other, and transmitting the group of 2P modulation symbols on the U transmitting ports. The data transmission performance can be improved.

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Shanghai, China

Yongfang Zhou