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    • 1. 发明授权
    • Carrier frequency recovering apparatus using phase shift and method thereof
    • 使用相移的载波频率恢复装置及其方法
    • US08027414B2
    • 2011-09-27
    • US11691057
    • 2007-03-26
    • Jung-Yeol OhJae-Young KimByung-Jae Kwak
    • Jung-Yeol OhJae-Young KimByung-Jae Kwak
    • H04L27/06
    • H04L27/2071H04B1/7075H04B2001/70706H04L27/0014H04L27/2331H04L2027/0055H04L2027/0067
    • Provided is a carrier frequency recovering apparatus and method based on phase shift. The carrier frequency recovering apparatus can recover carrier frequency based on phase shift caused by a frequency offset to thereby perform demodulation without deterioration, no matter how large the frequency offset is, and minimize structural complexity, although a frequency offset tolerance range is higher than a symbol rate and a method thereof. The carrier frequency recovering apparatus includes a phase shift estimation part for estimating a phase shift value caused by a frequency offset based on a received preamble signal; a compensation part for compensating a receiving signal based on the estimated phase shift value obtained in the phase shift estimation part prior to differential decoding; and a detection part for detecting the compensated signal obtained in the compensation part.
    • 提供了一种基于相移的载波频率恢复装置和方法。 载波频率恢复装置可以基于由频率偏移引起的相移来恢复载波频率,从而尽管频率偏移容差范围高于符号,但是无论频率偏移多大,并且使结构复杂度最小化,进行解调而不劣化。 速率及其方法。 载波频率恢复装置包括:相移估计部,用于基于接收到的前导信号估计由频率偏移引起的相移值; 补偿部分,用于基于在差分解码之前在相移估计部分中获得的估计相移值来补偿接收信号; 以及用于检测在补偿部分中获得的补偿信号的检测部分。
    • 2. 发明申请
    • Method for proactive coordinator appropriation for wireless personal area network
    • 无线个人区域网主动协调员拨款方法
    • US20090257397A1
    • 2009-10-15
    • US11991295
    • 2006-11-29
    • Byung-Jae KwakNah-Oak SongJae-Young Kim
    • Byung-Jae KwakNah-Oak SongJae-Young Kim
    • H04W36/00
    • H04W84/20
    • Provided is a method for switching a piconet device to a coordinator in a piconet. The method receives the latest order of precedence as the next PNC information from the current PNC. Thereafter, the method detects a P-CTA allocated to devices of the piconet using a beacon of a superframe received from the PNC. On failing to receive a beacon from the PNC, the method detects whether “beacon non-receipt” indicating information that is transmitted between piconet devices during the detected P-CTA. If the “beacon non-receipt” indicating information is not detected, the method does not perform a PNC appropriation operation. If the “beacon non-receipt” indicating information is detected, the method determines that the PNC has left the piconet without performing a normal PNC handover procedure and thus performs a PNC appropriation operation according to the order of precedence information.
    • 提供了一种将微微网设备切换到微微网中的协调器的方法。 该方法从当前PNC接收最新的优先顺序作为下一个PNC信息。 此后,该方法使用从PNC接收到的超帧的信标来检测分配给微微网的设备的P-CTA。 在未能从PNC接收信标的情况下,该方法检测在检测到的P-CTA期间是否在微微网设备之间传送的信标“信标不接收”。 如果未检测到“信标不接收”指示信息,则该方法不执行PNC拨号操作。 如果检测到“信标不接收”指示信息,则该方法确定PNC已经离开微微网而不执行正常的PNC切换过程,并且因此根据优先顺序信息执行PNC拨号操作。
    • 3. 发明授权
    • Method for proactive coordinator appropriation for wireless personal area network
    • 无线个人区域网主动协调员拨款方法
    • US08045534B2
    • 2011-10-25
    • US11991295
    • 2006-11-29
    • Byung-Jae KwakNah-Oak SongJae-Young Kim
    • Byung-Jae KwakNah-Oak SongJae-Young Kim
    • H04W4/00
    • H04W84/20
    • Provided is a method for switching a piconet device to a coordinator in a piconet. The method receives the latest order of precedence as the next PNC information from the current PNC. Thereafter, the method detects a P-CTA allocated to devices of the piconet using a beacon of a superframe received from the PNC. On failing to receive a beacon from the PNC, the method detects whether “beacon non-receipt” indicating information that is transmitted between piconet devices during the detected P-CTA. If the “beacon non-receipt” indicating information is not detected, the method does not perform a PNC appropriation operation. If the “beacon non-receipt” indicating information is detected, the method determines that the PNC has left the piconet without performing a normal PNC handover procedure and thus performs a PNC appropriation operation according to the order of precedence information.
    • 提供了一种将微微网设备切换到微微网中的协调器的方法。 该方法从当前PNC接收最新的优先顺序作为下一个PNC信息。 此后,该方法使用从PNC接收到的超帧的信标来检测分配给微微网的设备的P-CTA。 在未能从PNC接收信标的情况下,该方法检测在检测到的P-CTA期间是否在微微网设备之间传送的信标“信标不接收”。 如果未检测到“信标不接收”指示信息,则该方法不执行PNC拨号操作。 如果检测到“信标不接收”指示信息,则该方法确定PNC已经离开微微网而不执行正常的PNC切换过程,并且因此根据优先顺序信息执行PNC拨号操作。