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1. 发明申请

US20070211810A1 ADAPTIVE SUBCARRIER LOADING 有权
标题翻译：自适应加载
公开(公告)号：US20070211810A1
公开(公告)日：2007-09-13
申请号：US11747433
申请日：2007-05-11
申请人： Ralf BOHNKE , Seiichi Izumi
发明人： Ralf BOHNKE , Seiichi Izumi
IPC分类号： H04L27/26
CPC分类号： H04L5/0094 , H04L5/0007 , H04L5/0046 , H04L5/006
摘要： A wireless multicarrier transmission method in which a multicarrier transmission uses n modulated frequency subcarriers (n is an integer number), and a fading condition of each subcarrier is detected to generate fading channel profile information. The modulation of each subcarrier includes selecting a standard modulation scheme, a lower modulation scheme, and a higher modulation scheme; selecting three integer numbers x, y, and z representing the number of subcarriers for modulation with the lower modulation scheme, with the standard modulation scheme, and with the higher modulation scheme respectively, the sum of x, y, and z is n and a resulting number of coded bits of a multicarrier symbol is constant; and modulating the x subcarriers having low fading channel profile information with the lower modulation scheme, modulating the y subcarriers having medium fading channel profile information with the standard modulation scheme, and modulating the z subcarriers having high fading channel profile information with the higher modulation scheme.
摘要翻译：一种多载波传输使用n个调制频率副载波（n为整数）的无线多载波传输方法，并且检测每个子载波的衰落状态以生成衰落信道简档信息。每个子载波的调制包括选择标准调制方案，较低调制方案和较高调制方案; 使用标准调制方案选择三个整数x，y和z表示具有较低调制方式的子载波的数量，并且分别具有较高的调制方案，x，y和z的和为n，a 多载波符号的编码比特的数量是常数; 并以较低的调制方式调制具有低衰落信道分布信息的x个子载波，用标准调制方式调制具有中等衰落信道分布信息的y个子载波，并用具有较高调制方式调制具有高衰落信道分布信息的z个子载波。

2. 发明申请

US20060109932A1 OFDM pre-equalizing 审中-公开
标题翻译： OFDM预均衡
公开(公告)号：US20060109932A1
公开(公告)日：2006-05-25
申请号：US11320684
申请日：2005-12-30
申请人： Ralf Bohnke , Seiichi Izumi
发明人： Ralf Bohnke , Seiichi Izumi
IPC分类号： H04L27/04
CPC分类号： H04L27/01 , H04B7/04 , H04B7/0404 , H04B7/0613 , H04L1/0003 , H04L1/06 , H04L5/0007 , H04L5/005 , H04L5/14 , H04L25/03343 , H04L27/12 , H04L27/2626 , H04L2025/03808
摘要： For example in case of an OFDM multicarrier transmission system the transmission characteristics of subcarriers of a multicarrier transmission system using a plurality of antenna elements (3, 3′) can be adjusted. Particularly the power and the phase of the subcarriers can be adapted. To this object the subcarrier frequency channel (2, 2′) characteristics of the multicarrier transmission are detected (11, 11′) at the side of the transmitter (3). The power of each subcarrier is then distributed by a weighting unit (14, 14′). The subcarriers can be further pre-equalized (1, 1′) by dividing the subcarrier signal respectively by the sum of the squared magnitude of the frequency channel characteristics of all subcarrier signals or a frequency characteristic of the selected antenna element (3, 3′).
摘要翻译：例如，在OFDM多载波传输系统的情况下，可以调整使用多个天线元件（3,3'）的多载波传输系统的子载波的传输特性。特别地，可以适应副载波的功率和相位。为此，在发射机（3）侧检测到多载波传输的副载波频道（2,2'）特性（11,11'）。然后，每个子载波的功率由加权单元（14,14'）分配。可以通过将子载波信号分别除以所有子载波信号的频道特性的平方幅度之和或所选择的天线单元（3,3'）的频率特性，来进一步预均衡（1,1'），）。

3. 发明申请

US20050255820A1 Pole switch down converter with symmetric resonator 有权
标题翻译：具有对称谐振器的极开关转换器
公开(公告)号：US20050255820A1
公开(公告)日：2005-11-17
申请号：US11126035
申请日：2005-05-09
申请人： Ingo Ruhm , Ralf Bohnke
发明人： Ingo Ruhm , Ralf Bohnke
IPC分类号： H03D7/12 , H04B1/24 , H04B1/26 , H04B15/00 , H04B17/40
CPC分类号： H04B1/24
摘要： A pole switch down-converter with symmetric resonator which reduce the non resonating phase to approximately half of the RF carrier period of the modulated signal is proposed. The down-converter comprises a first and second λ/2 resonator for collecting RF energy, wherein a differential RF signal is coupled to the first and second λ/2 resonator, a switching means coupled at one end of the first λ/2 resonator and one end of second λ/2 resonator for connecting the first and second λ/2 resonator, a control means for controlling the switching means, and a detecting means coupled to the first and second λ/2 resonator for detecting the down-converted signal, wherein the control means is adapted to initiate in a down-conversion cycle the switching means to connect the first and second λ/2 resonator for approximate half of the RF carrier period of the modulated signal. With this pole switch down-converter adjacent RF channels can be selected and down-converted by slightly varying the pole switch repetition rate.
摘要翻译：提出了一种具有对称谐振器的极点开关下变频器，其将非谐振相位减小到调制信号的RF载波周期的大约一半。下变换器包括用于收集RF能量的第一和第二λ/ 2谐振器，其中差分RF信号耦合到第一和第二λ/ 2谐振器，耦合在第一λ/ 2谐振器的一端的开关装置和用于连接第一和第二λ/ 2谐振器的第二λ/ 2谐振器的一端，用于控制开关装置的控制装置，以及耦合到第一和第二λ/ 2谐振器的检测装置，用于检测下变频信号，其中所述控制装置适于在下转换周期中启动所述开关装置，以将所述第一和第二λ/ 2谐振器连接到所述调制信号的RF载波周期的大约一半。通过这个极点开关下变频器相邻的RF通道可以通过稍微改变极点开关重复率来选择和下变频。

4. 发明申请

US20070036235A1 Transmitting apparatus and method for a digital telecommunication system 有权
标题翻译：数字电信系统的发射装置和方法
公开(公告)号：US20070036235A1
公开(公告)日：2007-02-15
申请号：US11429210
申请日：2006-05-08
申请人： Ralf Bohnke , Thomas Dolle , Tino Puch
发明人： Ralf Bohnke , Thomas Dolle , Tino Puch
IPC分类号： H04K1/10 , H04L7/00
CPC分类号： H04L27/2663 , H04B1/16 , H04L7/042
摘要： The present invention relates to a receiving apparatus (1) for receiving signals in a digital telecommunication system and a synchronising method for synchronising such a receiving apparatus (1). The receiving apparatus (1) comprises receiving means (2, 3) for receiving a reference symbol comprising at least two repetition patterns, whereby one of said at least two repetition patterns is phase-shifted in relation to the other repetition pattern, and synchronising means (5) for synchronising the receiving apparatus (1) in the digital telecommunication system using said received reference symbol. The synchronising means (5) comprises a cross correlation means (16, 24) for cross correlating at least one of said two repetition patterns within a cross correlation window having a predetermined length. Hereby, the performance and the accuracy of a cross correlation peak detection can be enhanced for improved synchronisation.
摘要翻译：本发明涉及用于在数字电信系统中接收信号的接收装置（1）和用于同步这种接收装置（1）的同步方法。接收装置（1）包括接收装置（2,3），用于接收包括至少两个重复模式的参考符号，由此所述至少两个重复模式中的一个相对于另一个重复模式相移，同步装置（5），用于使用所述接收到的参考符号同步数字电信系统中的接收设备（1）。同步装置（5）包括互相关装置（16,24），用于在具有预定长度的互相关窗中互相关联所述两个重复图案中的至少一个。因此，可以增强互相关峰值检测的性能和精度，以改善同步。

5. 发明授权

US08457250B2 OFDM pre-equalizing 有权
公开(公告)号：US08457250B2
公开(公告)日：2013-06-04
申请号：US12108552
申请日：2008-04-24
申请人： Ralf Bohnke , Seiichi Izumi
发明人： Ralf Bohnke , Seiichi Izumi
IPC分类号： H04L27/00 , H04K1/10
CPC分类号： H04L27/01 , H04B7/04 , H04B7/0404 , H04B7/0613 , H04L1/0003 , H04L1/06 , H04L5/0007 , H04L5/005 , H04L5/14 , H04L25/03343 , H04L27/12 , H04L27/2626 , H04L2025/03808
摘要： For example in case of an OFDM multicarrier transmission system the transmission characteristics of subcarriers of a multicarrier transmission system using a plurality of antenna elements (3, 3′) can be adjusted. Particularly the power and the phase of the subcarriers can be adapted. To this object the subcarrier frequency channel (2, 2′) characteristics of the multicarrier transmission are detected (11, 11′) at the side of the transmitter (3). The power of each subcarrier is then distributed by a weighting unit (14, 14′). The subcarriers can be further pre-equalized (1, 1′) by dividing the subcarrier signal respectively by the sum of the squared magnitude of the frequency channel characteristics of all subcarrier signals or a frequency characteristic of the selected antenna element (3, 3′).

6. 发明授权

US07424079B2 Receiving apparatus and synchronising method for a digital telecommunication system 有权
标题翻译：数字电信系统的接收装置和同步方法
公开(公告)号：US07424079B2
公开(公告)日：2008-09-09
申请号：US11498080
申请日：2006-08-03
申请人： Ralf Bohnke , Thomas Dolle , Tino Konschak
发明人： Ralf Bohnke , Thomas Dolle , Tino Konschak
IPC分类号： H04L25/38
CPC分类号： H04L7/041 , H04L7/046
摘要： A receiving apparatus for receiving signals in a digital telecommunication system and a synchronizing method for synchronizing the receiving apparatus. The receiving apparatus includes a receiver for receiving a reference symbol having at least two repetition patterns. One of the, repetition patterns is phase-shifted in relation to the other. The receiving apparatus is synchronized in the digital telecommunication system using the received reference symbol. The synchronization includes a cross correlation of at least one of two repetition patterns within a cross correlation window having a predetermined length. In this manner, the performance and the accuracy of a cross correlation peak detection can be enhanced for improved synchronization.
摘要翻译：一种用于在数字电信系统中接收信号的接收装置和用于同步接收装置的同步方法。接收装置包括用于接收具有至少两个重复模式的参考符号的接收器。其中一个重复模式相对于另一个相移。接收设备在数字电信系统中使用接收的参考符号进行同步。同步包括具有预定长度的互相关窗中的两个重复图案中的至少一个的互相关。以这种方式，可以增强互相关峰值检测的性能和精度，以改善同步。

7. 发明申请

US20080205546A1 OFDM PRE-EQUALIZING 有权
公开(公告)号：US20080205546A1
公开(公告)日：2008-08-28
申请号：US12108552
申请日：2008-04-24
申请人： Ralf BOHNKE , Seiichi Izumi
发明人： Ralf BOHNKE , Seiichi Izumi
IPC分类号： H04L25/03
CPC分类号： H04L27/01 , H04B7/04 , H04B7/0404 , H04B7/0613 , H04L1/0003 , H04L1/06 , H04L5/0007 , H04L5/005 , H04L5/14 , H04L25/03343 , H04L27/12 , H04L27/2626 , H04L2025/03808
摘要： For example in case of an OFDM multicarrier transmission system the transmission characteristics of subcarriers of a multicarrier transmission system using a plurality of antenna elements (3, 3′) can be adjusted. Particularly the power and the phase of the subcarriers can be adapted. To this object the subcarrier frequency channel (2, 2′) characteristics of the multicarrier transmission are detected (11, 11′) at the side of the transmitter (3). The power of each subcarrier is then distributed by a weighting unit (14, 14′). The subcarriers can be further pre-equalized (1, 1′) by dividing the subcarrier signal respectively by the sum of the squared magnitude of the frequency channel characteristics of all subcarrier signals or a frequency characteristic of the selected antenna element (3, 3′).
摘要翻译：例如，在OFDM多载波传输系统的情况下，可以调整使用多个天线元件（3,3'）的多载波传输系统的子载波的传输特性。特别地，可以适应副载波的功率和相位。为此，在发射机（3）侧检测到多载波传输的副载波频道（2,2'）特性（11,11'）。然后，每个子载波的功率由加权单元（14,14'）分配。可以通过将子载波信号分别除以所有子载波信号的频道特性的平方幅度之和或所选择的天线单元（3,3'）的频率特性，来进一步预均衡（1,1'），）。

8. 发明申请

US20060269008A1 Receiving apparatus and synchronising method for a digital telecommunication system 有权
标题翻译：数字电信系统的接收装置和同步方法
公开(公告)号：US20060269008A1
公开(公告)日：2006-11-30
申请号：US11498080
申请日：2006-08-03
申请人： Ralf Bohnke , Thomas Dolle , Tino Konschak
发明人： Ralf Bohnke , Thomas Dolle , Tino Konschak
IPC分类号： H04K1/10 , H04L27/06 , H04L7/00
CPC分类号： H04L7/041 , H04L7/046
摘要： A receiving apparatus (1) for receiving signals in a digital telecommunication system and a synchronizing method for synchronizing the receiving apparatus (1). The receiving apparatus (1) includes a receiver (2, 3) for receiving a reference symbol having at least two repetition patterns. One of the, repetition patterns is phase-shifted in relation to the other. The receiving apparatus (1) is synchronized in the digital telecommunication system using the received reference symbol. The synchronization includes a cross correlation of at least one of two repetition patterns within a cross correlation window having a predetermined length. In this manner, the performance and the accuracy of a cross correlation peak detection can be enhanced for improved synchronization.
摘要翻译：一种用于在数字电信系统中接收信号的接收装置（1）和用于同步接收装置（1）的同步方法。接收装置（1）包括用于接收具有至少两个重复模式的参考符号的接收器（2,3）。其中一个重复模式相对于另一个相移。接收设备（1）在数字电信系统中使用接收的参考符号进行同步。同步包括具有预定长度的互相关窗中的两个重复图案中的至少一个的互相关。以这种方式，可以增强互相关峰值检测的性能和精度，以改善同步。

9. 发明申请

US20060133408A1 Beaconless communication system 有权
标题翻译：无信号通信系统
公开(公告)号：US20060133408A1
公开(公告)日：2006-06-22
申请号：US11273656
申请日：2005-11-14
申请人： Juan Nogueira-Nine , Ralf Bohnke
发明人： Juan Nogueira-Nine , Ralf Bohnke
IPC分类号： H04L12/413
CPC分类号： H04W52/0219 , H04W40/248 , H04W56/00 , H04W84/18 , Y02D70/142 , Y02D70/144 , Y02D70/22
摘要： The present invention relates to an energy efficient mechanism for establishing and maintaining a communication between nodes (A . . . F) in a wireless communication system. In particular, it relates to a distributed low power medium access control (MAC) mechanism for sharing the communication means in a wireless communication system. According to the present invention a destination node (A) listens to a communication channel periodically. For requesting services from the destination node (A), a wake-up signal (WU) is transmitted from a source node (B) to the destination node (A) via the communication channel, wherein the wake-up signal (WU) is formed by a preamble (WP) and an information for controlling the communication between nodes (A . . . F). The WU signal duration and content is adapted depending on the system operation context to reduce either idle times, power consumption, latency or network blocking (collision avoidance).
摘要翻译：本发明涉及一种用于在无线通信系统中建立和维持节点（A ... F）之间的通信的节能机构。具体地，本发明涉及一种用于在无线通信系统中共享通信装置的分布式低功率媒体接入控制（MAC）机制。根据本发明，目的地节点（A）周期性地监听通信信道。为了从目的地节点（A）请求服务，经由通信信道从源节点（B）向目的地节点（A）发送唤醒信号（WU），其中唤醒信号（WU）为由前导码（WP）和用于控制节点之间的通信的信息（A ... F）形成。 WU信号持续时间和内容根据系统操作上下文进行调整，以减少空闲时间，功耗，延迟或网络阻塞（避免冲突）。

10. 发明授权

US6160791A Transmission system for the transmission of power control information in an OFDM system 有权
标题翻译：用于在OFDM系统中传输功率控制信息的传输系统
公开(公告)号：US6160791A
公开(公告)日：2000-12-12
申请号：US141735
申请日：1998-08-27
申请人： Ralf Bohnke
发明人： Ralf Bohnke
IPC分类号： H04B7/005 , H04L25/49 , H04L27/26 , H04J11/00
CPC分类号： H04W52/54 , H04L25/4919 , H04L27/2602 , H04L27/2626 , H04L27/2647
摘要： A transmission method for transmitting signals on the basis of an orthogonal frequency division multiplex (OFDM) system is disclosed. Information to be transmitted in the signals is modulated onto a number of subcarriers in the frequency domain according to an OFDM modulation method, the information including phase reference information and power control information. One of the subcarriers is a phase reference subcarrier that carries the phase reference information. The power control information is modulated onto the phase reference subcarrier, thereby improving transmission efficiency. The signals are transformed into the time domain, and then transmitted.
摘要翻译：公开了一种基于正交频分复用（OFDM）系统发送信号的发送方法。根据OFDM调制方式，在信号中发送的信息被调制到频域中的多个子载波上，该信息包括相位参考信息和功率控制信息。其中一个子载波是携带相位参考信息的相位参考子载波。功率控制信息被调制到相位参考子载波上，从而提高传输效率。信号被转换成时域，然后传输。

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