US2009304120A1

5G,4G

Title

Wireless communication system with improved broadcast coverage

Application Number:

US20090480928

Publication Date:

10-12-2009

Current Assignee:

QUALCOMM INC

Family ID:

34971613

Application Date:

09-06-2009

Publication Country:

US

View on Espacenet

Priority Date:

04-06-2004

Declaring Company:

QUALCOMM INC

Abstract  Abstract

Techniques to transmit data with cyclic delay diversity and pilot staggering are described. For cyclic delay diversity OFDM symbols having different cyclic delay durations are generated. The cyclic delay durations for the OFDM symbols may be selected to be time varying with respect to the cyclic delay durations for OFDM symbols transmitted by a neighboring base station. An FDM pilot is generated and multiplexed on multiple sets of subbands in different symbol periods. Waveforms for a second radio technology (e.g. W-CDMA) may be generated for data to be transmitted with this radio technology. The OFDM symbols are multiplexed onto time slots used for OFDM and the waveforms for the second radio technology are multiplexed onto time slots used for this radio technology. One or multiple modulated signals may be generated based on the multiplexed OFDM symbols and waveforms. Each modulated signal is transmitted from a respective antenna.

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