发明名称 |
Process for estimating the channel in a OFDM communication system, and receiver for doing the same |
摘要 |
A process for estimating a channel in an OFDM communication system, wherein an OFDM sample is based on a time-frequency grid comprising a set of pilots may include the steps of receiving, by a receiver, OFDM sample based subframes comprising a set of pilot signals, performing an iterative loop for the purpose of computing (Mk, kk) respectively corresponding to the covariance matrix and the mean of the probability distribution of p(hk|yk, lk) at time instant k, yk, and lk respectively corresponding to the received signal and to a priori known information, the value of (Mk, kk) being computed as a function of (Mk−1, kk−1) as well as the values of the pilots received at instant k. |
申请公布号 |
US8842754(B2) |
申请公布日期 |
2014.09.23 |
申请号 |
US201013395975 |
申请日期 |
2010.09.16 |
申请人 |
ST-Ericsson SA;ST-Ericsson (France) SAS |
发明人 |
Couillet Romain |
分类号 |
H04K1/10;H04L27/28;H04L25/02 |
主分类号 |
H04K1/10 |
代理机构 |
Patent Portfolio Builders PLLC |
代理人 |
Patent Portfolio Builders PLLC |
主权项 |
1. A process for estimating a channel in an OFDM communication system, wherein an OFDM sample is based on a time-frequency grid comprising a set of pilots, the process comprising the steps of:
receiving, by a receiver, OFDM sample based subframes comprising a set of pilot signals; performing an iterative loop for the purpose of computing (Mk, kk) respectively corresponding to the covariance matrix and the mean of the probability distribution of p(hk|yk, lk) at time instant k, yk, and lk respectively corresponding to the received signal and to a priori known information and hk being a true channel at time instant k; and said value of (Mk, kk) being computed as a function of (Mk−1, kk−1) as well as the values of the pilots received at instant k. |
地址 |
Plan-les-Ouates CH |