Invention Grant
- Patent Title: Time and frequency acquisition and tracking for OFDMA wireless systems
-
Application No.: US12900285Application Date: 2010-10-07
-
Publication No.: US09401784B2Publication Date: 2016-07-26
- Inventor: Taesang Yoo , Tao Luo
- Applicant: Taesang Yoo , Tao Luo
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Nerrie M. Zohn
- Main IPC: H04B15/00
- IPC: H04B15/00 ; H04L5/00 ; H04B1/7097 ; H04J11/00 ; H04L27/26 ; H04W24/02 ; H04W72/08

Abstract:
Obtaining a timing reference in wireless communication is facilitated when desiring to communicate with a weak serving base station (such as an evolved NodeB) in the presence of a stronger interfering base station. The user equipment (UE) may track a stronger interfering base station's timing, or the UE may track a timing that is derived by a composite power delay profile (PDP) from multiple base stations. The composite PDP may be constructed by adjusting individual base station PDPs according to a weighting scheme. The timing obtained in such a manner may be used for estimation of the channel of the interfering base station and cancelling interfering signals from the base station. It may also be used to estimate the channel of the serving base station after adding a backoff. The UE may track a stronger interfering base station's frequency, or the UE may track a composite frequency.
Public/Granted literature
- US20110092231A1 TIME AND FREQUENCY ACQUISITION AND TRACKING FOR OFDMA WIRELESS SYSTEMS Public/Granted day:2011-04-21
Information query