Brian Dong - Cambridge MA, US Javad Razavilar - San Diego CA, US Manini S. Shah - San Diego CA, US Nathaniel Chittenden - Sunnyvale CA, US Valibabu Saladi - San Diego CA, US
A rake receiver comprises a plurality of receive antennas and a processing system. Each receive antenna has a plurality of demodulation elements. The processing system is configured to assign a plurality of demodulation elements from a plurality of receive antennas to a multipath group, assign the multipath group to a multipath signal, and independently adjust a time delay value of each demodulation element in the multipath group to correspond to a local time delay of the multipath signal at the corresponding receive antenna.
Brian Dong - Tucson AZ, US Messay Amerga - San Diego CA, US Supratik Bhattacharjee - San Diego CA, US Xiaoming Zhu - Sunnyvale CA, US
Assignee:
QUALCOMM Incorporated - San Diego CA
International Classification:
H04W 4/00
US Classification:
370332, 370242, 455436
Abstract:
Cell timing is detected by first trying to detect a target handover cell through detecting a primary synchronization channel (P-SCH) followed by a common pilot channel (CPICH). If that fails, N number of retrials is performed using a full-window search on the CPICH. The full-window CPICH search is performed blindly, without any slot timing information from the P-SCH. Performance is improved while maintaining the benefits of faster acquisition methods in good channel conditions. The full-window search is more time consuming, but takes advantage of the stronger CPICH transmission. In good channel conditions, a mobile device can proceed quickly with the normal method of timing acquisition. With failure, the mobile device can switch to the longer search which has a higher probability of successfully completing the hard handover procedure. The overall effect is a higher success rate of hard handovers without a uniform increase of time spent in cell timing acquisition.
Rake Receiver Finger Assignment Based On Signal Path Concentration
Thejaswi Bharadwaj Shesha - Santa Clara CA, US Brian Dong - San Diego CA, US Messay Amerga - San Diego CA, US Chih-Ping Hsu - San Diego CA, US Xiaoming Zhu - San Jose CA, US
International Classification:
H04B 1/00
US Classification:
375148000
Abstract:
A rake receiver finger assignor is configured to assign a rake receiver finger to a time offset between identified signal path time offsets in accordance with a concentration of identified signal paths from a transmitter to a rake receiver. In accordance with the exemplary embodiment, a number of identified signal paths having time offsets within a time window are observed to determine the concentration of signal paths identified by a path searcher. If the number of identified signal paths indicates a concentrated distribution of signal paths such as during a fat path condition, at least one rake finger is assigned between at a time offset between two identified signal paths.
Brian Dong works in UofL Health's division of medical oncology and hematology and specializes in breast cancer. While Dongsaid it's somewhat common to have breast cancer run in a family, these three sisters weren't aware of any genetic link.