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    • 2. 发明申请
    • HIGH PERFORMANCE EQUALIZER WITH ENHANCED DFE HAVING REDUCED COMPLEXITY
    • 高性能均衡器与增强的DFE具有降低的复杂性
    • US20080159377A1
    • 2008-07-03
    • US12043517
    • 2008-03-06
    • Steve A. AllpressQuinn Li
    • Steve A. AllpressQuinn Li
    • G06F17/10H03H7/30
    • H04L25/03261H04L25/03057H04L25/03076H04L25/03146H04L25/03171H04L2025/03401H04L2025/0349H04L2025/0356H04L2025/03796
    • An apparatus and method for implementing an equalizer which (1) combines the benefits of a decision feedback equalizer (DFE) with a maximum-a-posterori (MAP) equalizer (or a maximum likelihood sequence estimator, MLSE) (2) performs equalization in a time-forward or time-reversed manner based on the channel being minimum-phase or maximum-phase to provide an equalization device with significantly lower complexity than a full-state MAP device, but which still provides improved performance over a conventional DFE. The equalizer architecture includes two DFE-like structures, followed by a MAP equalizer. The first DFE forms tentative symbol decisions. The second DFE is used thereafter to truncate the channel response to a desired memory of L1 symbols, which is less than the total delay spread of L symbols of the channel. The MAP equalizer operates over a channel with memory of L1 symbols (where L1
    • (1)将判决反馈均衡器(DFE)与最大后缀(MAP)均衡器(或最大似然序列估计器,MLSE)(2)的优点相结合的均衡器的装置和方法(2)执行均衡 基于信道是最小相位或最大相位的时间前向或时间反转方式来提供具有比全状态MAP设备显着更低的复杂度的均衡设备,但仍然提供比常规DFE更好的性能。 均衡器架构包括两个类似DFE的结构,其次是MAP均衡器。 第一个DFE形成暂定的符号决定。 此后使用第二DFE来截断对于L1 L1符号的期望存储器的信道响应,其小于信道的L个符号的总延迟扩展。 MAP均衡器在具有L 1 1符号(其中L 1> L =)的存储器的信道上操作,因此均衡器的总体复杂度显着降低。
    • 3. 发明授权
    • High performance equalizer with enhanced DFE having reduced complexity
    • 具有增强型DFE的高性能均衡器具有降低的复杂性
    • US07151796B2
    • 2006-12-19
    • US09946648
    • 2001-09-04
    • Steve A. AllpressQuinn Li
    • Steve A. AllpressQuinn Li
    • G06F17/10H03H7/30
    • H04L25/03261H04L25/03057H04L25/03076H04L25/03146H04L25/03171H04L2025/03401H04L2025/0349H04L2025/0356H04L2025/03796
    • An apparatus and method for implementing an equalizer which (1) combines the benefits of a decision feedback equalizer (DFE) with a maximum-a-posterori (MAP) equalizer (or a maximum likelihood sequence estimator, MLSE) (2) performs equalization in a time-forward or time-reversed manner based on the channel being minimum-phase or maximum-phase to provide an equalization device with significantly lower complexity than a full-state MAP device, but which still provides improved performance over a conventional DFE. The equalizer architecture includes two DFE-like structures, followed by a MAP equalizer. The first DFE forms tentative symbol decisions. The second DFE is used thereafter to truncate the channel response to a desired memory of L1 symbols, which is less than the total delay spread of L symbols of the channel. The MAP equalizer operates over a channel with memory of L1 symbols (where L1
    • (1)将判决反馈均衡器(DFE)与最大后缀(MAP)均衡器(或最大似然序列估计器,MLSE)(2)的优点相结合的均衡器的装置和方法(2)执行均衡 基于信道是最小相位或最大相位的时间前向或时间反转方式来提供具有比全状态MAP设备显着更低的复杂度的均衡设备,但仍然提供比常规DFE更好的性能。 均衡器架构包括两个类似DFE的结构,其次是MAP均衡器。 第一个DFE形成暂定的符号决定。 此后使用第二DFE来截断对于L1 L1符号的期望存储器的信道响应,其小于信道的L个符号的总延迟扩展。 MAP均衡器在具有L 1 1符号(其中L 1> L =)的存储器的信道上操作,因此均衡器的总体复杂度显着降低。
    • 5. 发明授权
    • High performance equalizer having reduced complexity
    • 高性能均衡器具有降低的复杂性
    • US07012957B2
    • 2006-03-14
    • US09941300
    • 2001-08-27
    • Stephen AllpressQuinn Li
    • Stephen AllpressQuinn Li
    • H03H7/30H03H7/40H03K5/159
    • H04L25/03171H04L25/03057H04L25/03076H04L25/03146H04L25/03261H04L2025/03401H04L2025/0349H04L2025/0356H04L2025/03796
    • An apparatus and method for implementing an equalizer which combines the benefits of a decision feedback equalizer (DFE) with a maximum-a-posterori (MAP) equalizer (or a maximum likelihood sequence estimator, MLSE) to provide an equalization device with significantly lower complexity than a full-state MAP device, but which still provides improved performance over a conventional DFE. The equalizer architecture includes two DFE-like structures, followed by a MAP equalizer. The first DFE forms tentative symbol decisions. The second DFE is used thereafter to truncate the channel response to a desired memory of L1 symbols, which is less than the total delay spread of L symbols of the channel. The MAP equalizer operates over a channel with memory of L1 symbols (where L1
    • 一种用于实现均衡器的装置和方法,其将判决反馈均衡器(DFE)与最大似然序列估计器(MLSE)的最大似然序列估计器(MLSE)的优点相结合,以提供具有显着更低复杂度的均衡器件 而不是全状态MAP设备,但仍然提供比传统DFE更好的性能。 均衡器架构包括两个类似DFE的结构,其次是MAP均衡器。 第一个DFE形成暂定的符号决定。 此后使用第二DFE来截断对于L1 L1符号的期望存储器的信道响应,其小于信道的L个符号的总延迟扩展。 MAP均衡器在具有L 1 1符号(其中L 1> L =)的存储器的信道上操作,因此均衡器的总体复杂度显着降低。
    • 6. 发明授权
    • Channel structure for forward link power control
    • 前向链路功率控制的通道结构
    • US06590873B1
    • 2003-07-08
    • US09245204
    • 1999-02-05
    • Quinn LiMartin Howard MeyersJohn MinkoffXiao Cheng Wu
    • Quinn LiMartin Howard MeyersJohn MinkoffXiao Cheng Wu
    • H04B7185
    • H04W52/58
    • The invention is a method for controlling power on multiple forward link communication channels by using multiple power control sub-channels, wherein each power control sub-channel is associated with a forward link communication channel to be power controlled. A fundamental power control sub-channel and a supplemental power control sub-channel are time multiplexed onto a reverse pilot channel. Transmitted over the fundamental power control sub-channel is a fundamental power control bit for indicating to a base station to increase or decrease its transmission power over a corresponding forward fundamental channel. Transmitted over the supplemental power control sub-channel is a supplemental power control bit for indicating to a base station to increase or decrease its transmission power over a corresponding forward supplemental channel. The pilot sub-channels are preferably separated by the fundamental and supplemental power control sub-channels for time diversity purposes.
    • 本发明是一种通过使用多个功率控制子信道来控制多个前向链路通信信道上的功率的方法,其中每个功率控制子信道与要被功率控制的前向链路通信信道相关联。 基本功率控制子信道和补充功率控制子信道被时分复用到反向导频信道上。 通过基本功率控制子信道发送的是用于向基站指示在相应的前向基本信道上增加或减少其发送功率的基本功率控制位。 通过补充功率控制子信道传输的补充功率控制位用于向基站指示在相应的前向补充信道上增加或减少其发射功率。 导频子信道优选地由用于时间分集目的的基本和补充功率控制子信道分离。
    • 7. 发明授权
    • Method of power control for a wireless communication system having multiple information rates
    • 具有多种信息速率的无线通信系统的功率控制方法
    • US06535723B1
    • 2003-03-18
    • US09267998
    • 1999-03-15
    • Frances JiangRaafat Edward KamelQuinn LiAlexandro Federico SalvaraniCarl Francis Weaver
    • Frances JiangRaafat Edward KamelQuinn LiAlexandro Federico SalvaraniCarl Francis Weaver
    • H04B106
    • H04W52/265H04W52/12H04W52/241H04W52/267H04W52/36H04W52/40
    • A method of controlling the power in a wireless communication system. In one embodiment of the invention, a base station determines the information rate of a signal to be transmitted to a mobile station, and obtains the variable power control scaling factor based on this information rate. The base station then transmits the variable power control scaling factor to the mobile station. The mobile station determines a target signal quality measurement for a received signal from the base station, such as a target Eb/N0, and scales the target Eb/N0 by the variable power control scaling factor. The mobile station also obtains an information rate scaling factor based on the information rate of the received signal, and further scales the target Eb/N0 by this information rate scaling factor. The mobile station then compares the target Eb/N0 to a measured Eb/N0 of the received signal. An increase in power of the received signal is requested when the measured Eb/N0 of the received signal is smaller than the scaled Eb/N0. A decrease in power of the received signal is requested when the measured Eb/N0 of the received signal is larger than the scaled Eb/N0. Providing the variable power control scaling factor to the mobile station allows frames having an information rate lower than the full rate to be transmitted at a power even lower than the power of a frame having an information rate equal to the full rate times the information scaling factor.
    • 一种在无线通信系统中控制功率的方法。 在本发明的一个实施例中,基站确定要发送到移动台的信号的信息速率,并且基于该信息速率获得可变功率控制缩放因子。 然后,基站向移动台发送可变功率控制缩放因子。 移动台确定来自诸如目标Eb / N0的基站的接收信号的目标信号质量测量,并且通过可变功率控制缩放因子对目标Eb / N0进行缩放。 移动站还根据接收信号的信息速率获得信息速率缩放因子,并且通过该信息速率缩放因子进一步缩放目标Eb / N0。 然后,移动台将目标Eb / N0与接收信号的测量Eb / N0进行比较。 当所测量的接收信号的Eb / N0小于缩放的Eb / N0时,请求接收信号功率的增加。 当所测量的接收信号的Eb / N0大于缩放的Eb / N0时,请求接收信号功率的降低。 向移动台提供可变功率控制缩放因子允许具有低于全速率的信息速率的帧以甚至低于具有等于全速率的信息速率的帧的功率乘以信息缩放因子的功率发送 。
    • 9. 发明授权
    • High performance equalizer having reduced complexity
    • 高性能均衡器具有降低的复杂性
    • US07656943B2
    • 2010-02-02
    • US11376002
    • 2006-03-14
    • Stephen AllpressQuinn Li
    • Stephen AllpressQuinn Li
    • H03H7/30H03H7/40H03K5/159
    • H04L25/03171H04L25/03057H04L25/03076H04L25/03146H04L25/03261H04L2025/03401H04L2025/0349H04L2025/0356H04L2025/03796
    • An apparatus and method for implementing an equalizer which combines the benefits of a decision feedback equalizer (DFE) with a maximum-a-posterori (MAP) equalizer (or a maximum likelihood sequence estimator, MLSE) to provide an equalization device with significantly lower complexity than a full-state MAP device, but which still provides improved performance over a conventional DFE. The equalizer architecture includes two DFE-like structures, followed by a MAP equalizer. The first DFE forms tentative symbol decisions. The second DFE is used thereafter to truncate the channel response to a desired memory of L1 symbols, which is less than the total delay spread of L symbols of the channel. The MAP equalizer operates over a channel with memory of L1 symbols (where L1
    • 一种用于实现均衡器的装置和方法,其将判决反馈均衡器(DFE)与最大似然序列估计器(MLSE)的最大似然序列估计器(MLSE)的优点相结合,以提供具有显着更低复杂度的均衡器件 而不是全状态MAP设备,但仍然提供比传统DFE更好的性能。 均衡器架构包括两个类似DFE的结构,其次是MAP均衡器。 第一个DFE形成暂定的符号决定。 此后使用第二DFE来截断对L1符号的期望存储器的信道响应,其小于信道的L个符号的总延迟扩展。 MAP均衡器在具有L1符号(其中L1 <= L)的存储器的信道上操作,因此均衡器的总体复杂度显着降低。