Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 尤子豪 | en_US |
dc.contributor.author | You, Zu-Hao | en_US |
dc.contributor.author | 許騰尹 | en_US |
dc.contributor.author | Hsu, Terng-Yin | en_US |
dc.date.accessioned | 2014-12-12T02:44:14Z | - |
dc.date.available | 2014-12-12T02:44:14Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.uri | http://140.113.39.130/cdrfb3/record/nctu/#GT070156051 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/75831 | - |
dc.description.abstract | 隨著無線通訊技術的快速發展,超高速傳輸系統已成為新一代無線通訊系統的發展核心,然而高速傳輸需要更快的取樣頻率,這將使得「大量取樣頻率偏移」此問題發生的機率增加,這將造成訊號嚴重的衰減。因此,本論文致力於研究在1024-FFT下超高速多天線(MIMO)正交分頻多工(OFDM)系統中,頻率域上的時間同步器,達到同步取樣的目的。 本論文所提出的演算法,主要應用在於3GPP 所制定的無線區域網路標準 LTE上,藉著封包間格式固定的參考信號,利用其彼此的相關性對取樣誤差作估計,並以調節取樣相位的方式以及插值器補償取樣時脈誤差。另外,透過2維的通道估計器,我們能夠處理前向補償的剩餘部分,使得整個過程可以有效地和快速地執行取樣同步。 | zh_TW |
dc.description.abstract | Due to the explosive growth demand for wireless communication, the next-generation wireless communication systems are expected to provide high-speed and high-throughput. However, high-speed transmission needs high sampling rate, which would cause wide sampling clock offset. Based on phase adjustment, this work investigates a frequency-domain timing synchronizer to perform coherent sampling for 1024-FFT Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) timing recovery. In the proposed algorithm, we use a multiphase all-digital clock management (ADCM) which can generate more than 16 phases over GHz to adjust sampling phases and utilize the reference signals in one sub-frame to estimate the sampling phase error. Moreover, by combing the 2-dimensional channel estimator and equalizer, we are able to deal with the remaining part of the previous compensation. The entire process can perform the sampling clock synchronization efficiently and quickly. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | 同步 | zh_TW |
dc.subject | 取樣 | zh_TW |
dc.subject | LTE | zh_TW |
dc.subject | SCO | zh_TW |
dc.subject | synchronization | en_US |
dc.subject | sampling | en_US |
dc.subject | LTE | en_US |
dc.subject | SCO | en_US |
dc.title | 應用於LTE接收端頻域上之時間同步器 | zh_TW |
dc.title | Frequency Domain Timing Synchronizer in a LTE Receiver | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | 資訊科學與工程研究所 | zh_TW |
Appears in Collections: | Thesis |