公开(公告)号：US20060083290A1

公开(公告)日：2006-04-20

申请号：US11023382

申请日：2004-12-29

申请人： Cheol Shin ,  Sang sung Choi ,  Kwang Park

发明人： Cheol Shin ,  Sang sung Choi ,  Kwang Park

IPC分类号： H04B1/69 ,  H04K1/10

CPC分类号： H04B1/7163 ,  H04B1/713 ,  H04B1/7183 ,  H04B2001/6908 ,  H04L27/2657 ,  H04L27/2676

摘要： There is provided a frequency estimation method of multiband (MB)-orthogonal frequency division multiplexing (OFDM) ultra wide band (UWB) system using an Alt-PHY time frequency (TF) hopping strategy based on IEEE 802. 15. 3a. The frequency estimation method includes the steps of: a) selecting a predetermined number of frequencies among a plurality of center frequencies based on a predetermined number of OFDM symbols and estimating relative frequency offsets for selected frequencies; b) obtaining an average relative frequency offset by averaging the estimated relative frequency offsets when two or more frequencies are selected at the step a); and c) obtaining real frequency offsets for each of the center frequencies by transforming the obtained average relative frequency offset to the real frequency offsets and compensating a frequency offset caused by a transmitting/receiving local oscillators based on the obtained real frequency offsets.

摘要翻译： 提供了使用基于IEEE802.15的Alt-PHY时间频率（TF）跳频策略的多频带（MB） - 正交频分复用（OFDM）超宽带（UWB）系统的频率估计方法。 频率估计方法包括以下步骤：a）基于预定数量的OFDM符号来选择多个中心频率中的预定数量的频率，并估计所选频率的相对频率偏移; b）当在步骤a）选择两个或更多个频率时，通过平均所估计的相对频率偏移来获得平均相对频率偏移; 以及c）通过将所获得的平均相对频率偏移变换为实际偏移量来获得每个中心频率的实际频率偏移，并且基于所获得的实频偏移来补偿由发送/接收本地振荡器引起的频率偏移。

公开(公告)号：US07366262B2

公开(公告)日：2008-04-29

申请号：US11023382

申请日：2004-12-29

申请人： Cheol HO Shin ,  Sang sung Choi ,  Kwang Roh Park

发明人： Cheol HO Shin ,  Sang sung Choi ,  Kwang Roh Park

IPC分类号： H04L27/06

CPC分类号： H04B1/7163 ,  H04B1/713 ,  H04B1/7183 ,  H04B2001/6908 ,  H04L27/2657 ,  H04L27/2676

摘要： A frequency estimation method of multiband (MB)-orthogonal frequency division multiplexing (OFDM) ultra wide band (UWB) system using an Alt-PHY time frequency (TF) hopping strategy based on IEEE 802. 15. 3a. includes the steps of: a) selecting a predetermined number of frequencies among a plurality of center frequencies based on a predetermined number of OFDM symbols and estimating relative frequency offsets for selected frequencies; b) obtaining an average relative frequency offset by averaging the estimated relative frequency offsets when two or more frequencies are selected at the step a); and c) obtaining real frequency offsets for each of the center frequencies by transforming the obtained average relative frequency offset to the real frequency offsets and compensating a frequency offset caused by a transmitting/receiving local oscillators based on the obtained real frequency offsets.

摘要翻译： 基于IEEE 802.11的使用Alt-PHY时间频率（TF）跳频策略的多频带（MB） - 正交频分复用（OFDM）超宽带（UWB）系统的频率估计方法。 包括以下步骤：a）基于预定数量的OFDM符号来选择多个中心频率中的预定数量的频率，并估计所选频率的相对频率偏移; b）当在步骤a）选择两个或更多个频率时，通过平均所估计的相对频率偏移来获得平均相对频率偏移; 以及c）通过将所获得的平均相对频率偏移变换为实际偏移量来获得每个中心频率的实际频率偏移，并且基于所获得的实频偏移来补偿由发送/接收本地振荡器引起的频率偏移。