Invention Grant
- Patent Title: Wireless communication system with improved broadcast coverage
- Patent Title (中): 无线通信系统具有改进的广播覆盖
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Application No.: US12480928Application Date: 2009-06-09
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Publication No.: US08687617B2Publication Date: 2014-04-01
- Inventor: Avneesh Agrawal , Durga Prasad Malladi , Anastasios Stamoulis , Ashok Mantravadi , Ramaswamy Murali
- Applicant: Avneesh Agrawal , Durga Prasad Malladi , Anastasios Stamoulis , Ashok Mantravadi , Ramaswamy Murali
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Larry J. Moskowitz
- Main IPC: H04B7/208
- IPC: H04B7/208

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.
Public/Granted literature
- US20090304120A1 WIRELESS COMMUNICATION SYSTEM WITH IMPROVED BROADCAST COVERAGE Public/Granted day:2009-12-10
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