发明名称 |
Estimation of a multipath signal in a wireless communication system |
摘要 |
Described herein is a method and system for estimating a time-varying multipath communication channel. The system comprises a receiver for receiving a signal comprising a data packet transmitted over the multipath communication channel. The system also comprises a frequency-domain channel estimator that generates a frequency-domain channel estimate based on the received signal. The system further comprises a time-domain channel modeller that receives the frequency-domain channel estimate and generates an estimate of parameters in a time-domain model of the multipath communication channel. The model characterizes the multipath communication channel as a delay line with a plurality of taps, each tap having tap parameters defining a delay, a Doppler and a gain for the tap. The tap parameters are constant over the data packet. |
申请公布号 |
US9083419(B2) |
申请公布日期 |
2015.07.14 |
申请号 |
US201113805234 |
申请日期 |
2011.06.24 |
申请人 |
Cohda Wireless Pty. Ltd. |
发明人 |
Alexander Paul Dean;Letzepis Nick;Grant Alexander James;Haley David Victor Lawrie |
分类号 |
H04B1/10;H04J11/00;H04L25/02;H04L27/26;H04L27/06 |
主分类号 |
H04B1/10 |
代理机构 |
Schwegman Lundberg & Woessner, P.A. |
代理人 |
Schwegman Lundberg & Woessner, P.A. |
主权项 |
1. A method of estimating a time-varying multipath OFDM communication channel, the method comprising:
receiving a frequency-domain channel estimate of the multipath communication channel, the frequency-domain channel estimate deriving from an OFDM data packet transmitted over the multipath communication channel; and, based on the frequency-domain channel estimate generating an estimate of tap parameters in a time-domain model of the multipath communication channel, the time-domain model characterising the multipath communication channel as a delay line with a plurality of taps, each tap having tap parameters defining a delay, a Doppler and a complex gain for the tap, wherein the estimated tap parameters are constant for the duration of the data packet. |
地址 |
AU |