发明授权
US08989311B2 Methods and systems for improved channel estimation in multi-carrier systems
有权
在多载波系统中改进信道估计的方法和系统
- 专利标题: Methods and systems for improved channel estimation in multi-carrier systems
- 专利标题(中): 在多载波系统中改进信道估计的方法和系统
-
申请号: US12888242申请日: 2010-09-22
-
公开(公告)号: US08989311B2公开(公告)日: 2015-03-24
- 发明人: Jeremy M. Stein , James E. Beckman , Joseph C. Chan , Michael Leviant
- 申请人: Jeremy M. Stein , James E. Beckman , Joseph C. Chan , Michael Leviant
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 代理机构: Norton Rose Fulbright US LLP
- 主分类号: H04L27/06
- IPC分类号: H04L27/06 ; H03K9/00 ; H04L25/02
摘要:
Wireless receiver circuits and methods include algorithms for switching between a least-squares/minimum mean-square error method of channel estimation known as the CE algorithm, and a continuous plot method of channel estimation known as the CPCE algorithm based upon channel characteristics to improve reception of wireless communications in different reception conditions. In an embodiment, the CPCE algorithm may be selected by a processor for use in channel estimation when a calculated number of candidate paths is less than or equal to a first threshold value, a calculated power ratio of the L strongest paths to the total of all paths is greater than or equal to a second threshold value, and the maximum Automatic Gain Control variation is greater than or equal to a third threshold value. Threshold values may be based on field testing, and set to values at which the CE or CPCE algorithm exhibits better performance.
公开/授权文献
信息查询