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发明公开
CN101997800A 载波频偏的估计方法及其装置 有权

载波频偏的估计方法及其装置
摘要：
本发明涉及通信领域，公开了一种载波频偏的估计方法及其装置。本发明中，在接收端中对本地训练序列按步长添加频偏，再通过添加了频偏的本地训练序列相关接收到的训练序列数据，获得检测幅度(或者功率)，通过合并后的幅度(或者功率)检测其载波频偏。通过利用添加了频偏的本地训练序列与接收到的训练序列进行载波频偏的估计，可使得载波频偏检测的范围较大，而且有较高的检测精度。而且，由于载波频偏的检测方法与系统的模式并没有关联，因此无需局限于其系统的调制模式，可以适用于各种通信系统，GSM，CDMA2000/CDMA95，WCDMA，TD-SCDMA等等。
摘要（英）：

The invention relates to the field of communication and discloses a method and device for estimating the carrier frequency offset. In the invention, the frequency offset is added to a local training sequence according to the step length in a receiving end, the detection amplitude (or the power) can be acquired by training sequence data received by the frequency offset-added local training sequence correlation, and the carrier frequency offset of the local training sequence correlation can be detected through the combined amplitude (or the power). By using the frequency offset-added local training sequence and the received training sequence to estimate the carrier frequency offset, the detection range of the carrier offset is wider and the detection precision is higher. In addition, the detection method for the carrier frequency offset is irrelevant with the mode of the system, thus the invention is free from being limited in the modulation mode of the system and can be applied to various communication systems, GSM (Global System for Mobile Communications), CDMA(Code Division Multiple Access) 2000/CDMA95, WCDMA(Wideband Code Division Multiple Access), TD-SCDMA(Time Division-Synchronization Code Division Multiple Access) and the like.

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