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1. 发明申请

WO2005029749A3 SPUR MITIGATION TECHNIQUES 审中-公开
标题翻译： SPUR减缓技术
公开(公告)号：WO2005029749A3
公开(公告)日：2007-01-18
申请号：PCT/US2004030315
申请日：2004-09-15
申请人： ATHEROS COMM INC , CHOI WON-JOON , GILBERT JEFFREY M , WANG YI-HSIU , ZHANG XIAORU
发明人： CHOI WON-JOON , GILBERT JEFFREY M , WANG YI-HSIU , ZHANG XIAORU
IPC分类号： H04K1/10 , H04L27/26
CPC分类号： H04L25/0232 , H04L1/0045 , H04L27/2647
摘要： Spurs cause significant problems with signal detecting, amplifier gain adjustment, and signal decoding. Various techniques can be used to mitigate the effects of spurs on a received signal. Generally, these techniques work by either canceling or ignoring the spurs. For example, a pilot mask can be used to ignore pilot information in one or more sub-channels. A Viterbi mask can determine the weighting given to bits in a sub-channel based on spur and data rate information. Channel interpolation can compute a pseudo channel estimate for a sub-channel known to have a spur location can be computed by interpolating the channel estimates of adjacent good sub-channels. Filtering of the received signal using a low-pass filter, a growing box filter, or a low-pass filter with self-correlation can be used to cancel a spur.
摘要翻译：马刺引起信号检测，放大器增益调整和信号解码的重大问题。可以使用各种技术来减轻杂散对接收信号的影响。一般来说，这些技术可以取消或忽略杂散。例如，可以使用导频掩码来忽略一个或多个子信道中的导频信息。维特比掩码可以基于分支和数据速率信息来确定子信道中的比特的加权。可以通过内插相邻的良好子信道的信道估计来计算已知具有支路位置的子信道的信道内插可以计算伪信道估计。使用低通滤波器，增长盒滤波器或具有自相关的低通滤波器对接收信号进行滤波可用于取消杂散。

2. 发明申请

WO2006076583A3 RATE ADAPTATION USING SEMI-OPEN LOOP TECHNIQUE 审中-公开
标题翻译：使用半开环技术的速率调整
公开(公告)号：WO2006076583A3
公开(公告)日：2007-12-21
申请号：PCT/US2006001244
申请日：2006-01-12
申请人： ATHEROS COMM INC , CHOI WON-JOON , ZHANG NING , YE HUANCHUN , GILBERT JEFFREY M
发明人： CHOI WON-JOON , ZHANG NING , YE HUANCHUN , GILBERT JEFFREY M
IPC分类号： H04L12/26
CPC分类号： H04W52/24 , G01R29/26 , H04B7/0413 , H04L1/0002 , H04L1/0003 , H04L1/0009 , H04L1/0016 , H04L1/1607 , H04L1/20 , H04L25/0204 , H04L47/10 , H04L47/263
摘要： In a semi-open loop rate adaptation scheme for a multiple-input multiple-output (MIMO) system, a transmitter can advantageously use one or more quality metrics of an uplink as well as knowledge of device characteristics of both ends to perform fast and accurate rate adaptation.
摘要翻译：在用于多输入多输出（MIMO）系统的半开环速率适配方案中，发射机可以有利地使用上行链路的一个或多个质量度量以及两端的设备特性的知识来执行快速和准确的速率适应

3. 发明申请

WO2005036775A2 APPARATUS AND METHOD OF MULTIPLE ANTENNA TRANSMITTER BEAMFORMING OF HIGH DATA RATE WIDEBAND PACKETIZED WIRELESS COMMUNICATION SIGNALS 审中-公开
标题翻译：高数据速率宽带无线通信信号的多天线发射机波束的装置和方法
公开(公告)号：WO2005036775A2
公开(公告)日：2005-04-21
申请号：PCT/US2004033081
申请日：2004-10-06
申请人： ATHEROS COMM INC , CHOI WON-JOON , TEHRANI ARDAVAN M , GILBERT JEFFREY M , NG SAMUEL
发明人： CHOI WON-JOON , TEHRANI ARDAVAN M , GILBERT JEFFREY M , NG SAMUEL
IPC分类号： H04B7/06 , H04L25/02 , H04L27/26
CPC分类号： H04L27/2626 , H04B7/0617 , H04L25/0206 , H04L27/2608 , H04L27/2614
摘要： The present invention provides an apparatus and method of multiple antenna transmitter beamforming of high data rate wideband packetized wireless communication signals, where each of the signals comprises N frequencies, where N is a positive integer. The apparatus, in an exemplary embodiment, includes (1) a transmit beamformer that co-phases and weights the signals for each of the N frequencies across M antennas, thereby generating M co-phased and weighted frequency data and (2) M Inverse Fast Fourier Transform units (IFFTs) that convert the M co-phased and weighted frequency data into M digital outputs, and M transmit antennas transmitting the M co-phased and weighted signals, where M is an integer greater than or equal to 2.
摘要翻译：本发明提供了一种高数据速率宽带分组化无线通信信号的多天线发射机波束成形的装置和方法，其中每个信号包括N个频率，其中N是正整数。在示例性实施例中，该装置包括：（1）发射波束形成器，其对M个天线中的每个N个频率的信号进行共相并加权，由此产生M个同相和加权的频率数据;（2）M 将M个相位和加权频率数据转换为M个数字输出的傅里叶变换单元（IFFT），以及发射M个同相加权信号的M个发射天线，其中M是大于或等于2的整数。

4. 发明申请

WO2005036775A3 APPARATUS AND METHOD OF MULTIPLE ANTENNA TRANSMITTER BEAMFORMING OF HIGH DATA RATE WIDEBAND PACKETIZED WIRELESS COMMUNICATION SIGNALS 审中-公开
标题翻译：高数据速率宽带无线通信信号的多天线发射机波束的装置和方法
公开(公告)号：WO2005036775A3
公开(公告)日：2005-08-11
申请号：PCT/US2004033081
申请日：2004-10-06
申请人： ATHEROS COMM INC , CHOI WON-JOON , TEHRANI ARDAVAN M , GILBERT JEFFREY M , NG SAMUEL
发明人： CHOI WON-JOON , TEHRANI ARDAVAN M , GILBERT JEFFREY M , NG SAMUEL
IPC分类号： H04B7/06 , H04L25/02 , H04L27/26
CPC分类号： H04L27/2626 , H04B7/0617 , H04L25/0206 , H04L27/2608 , H04L27/2614
摘要： The present invention provides an apparatus and method of multiple antenna transmitter beamforming of high data rate wideband packetized wireless communication signals, where each of the signals comprises N frequencies, where N is a positive integer. The apparatus, in an exemplary embodiment, includes (1) a transmit beamformer (220) that co-phases and weights the signals for each of the N frequencies across M antennas, thereby generating M co-phased and weighted frequency data and M Inverse Fast Fourier Transform units (IFFTs 230, 232) that convert the M co-phased and weighted frequency data into M digital outputs, and M transmit antennas (260, 262) transmitting the M co-phased and weighted signals, where M is an integer greater than or equal to 2.
摘要翻译：本发明提供了一种高数据速率宽带分组化无线通信信号的多天线发射机波束成形的装置和方法，其中每个信号包括N个频率，其中N是正整数。在示例性实施例中，该装置包括：（1）发射波束形成器（220），其跨M个天线对N个频率中的每一个进行信号的相位和加权，从而产生M个同相和加权频率数据，并且M反向快速将M个相位和加权的频率数据转换成M个数字输出的傅立叶变换单元（IFFT 230，232）以及M个发送天线（260,262），M个发送天线的M个相位和加权的信号，其中M是更大的整数超过或等于2。

5. 发明申请

WO2005046113A3 MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM AND METHOD 审中-公开
标题翻译：多输入多输出系统及方法
公开(公告)号：WO2005046113A3
公开(公告)日：2007-02-22
申请号：PCT/US2004036886
申请日：2004-11-04
申请人： ATHEROS COMM INC , SUN QINFANG , CHOI WON-JOON , GILBERT JEFFREY M , TEHRANI ARDAVAN MALEKI
发明人： SUN QINFANG , CHOI WON-JOON , GILBERT JEFFREY M , TEHRANI ARDAVAN MALEKI
IPC分类号： H04B7/02 , H04L20060101 , H04L1/02 , H04L27/28 , H04Q7/00
CPC分类号： H04B7/0421 , H04B7/0413 , H04B7/0613 , H04B7/0684 , H04L1/0041 , H04L1/0054 , H04L1/0061 , H04L1/06 , H04L1/0656 , H04L1/1819 , H04L1/1829 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04L27/0014 , H04L2025/03426
摘要： A multiple-input multiple-output (MIMO) system can transmit on multiple antennas simultaneously and receive on multiple antennas simultaneously. Unfortunately, because a legacy 802.11a/g device is not able to decode multiple data streams, such a legacy device may "stomp" on a MIMO packet by transmitting before the transmission of the MIMO packet is complete. Therefore, MIMO systems and methods are provided herein to allow legacy devices to decode the length of a MIMO packet and to restrain from transmitting during that period. These MIMO systems and methods are optimized for efficient transmission of MIMO packets.
摘要翻译：多输入多输出（MIMO）系统可以同时在多个天线上进行发射并同时在多个天线上进行接收。不幸的是，由于遗留802.11a / g设备不能解码多个数据流，所以这样的传统设备可能在MIMO分组的传输完成之前通过发送在MIMO分组上“踩踏”。因此，本文提供MIMO系统和方法，以允许传统设备对MIMO分组的长度进行解码并且在该时间段内抑制发射。这些MIMO系统和方法被优化用于MIMO分组的有效传输。

6. 发明申请

WO2006076697A2 SELECTING MCS IN A MIMO SYSTEM 审中-公开
标题翻译：在MIMO系统中选择MCS
公开(公告)号：WO2006076697A2
公开(公告)日：2006-07-20
申请号：PCT/US2006001452
申请日：2006-01-12
申请人： ATHEROS COMM INC , YE HUANCHUN , CHOI WON-JOON , ZHANG NING , GILBERT JEFFREY M
发明人： YE HUANCHUN , CHOI WON-JOON , ZHANG NING , GILBERT JEFFREY M
CPC分类号： H04L27/2608 , H04B7/02 , H04L1/0003 , H04L1/0009 , H04L1/0015 , H04L1/0016 , H04L1/0025 , H04L1/20
摘要： An accurate total error rate performance can be measured using a computed error vector magnitude (EVM) per stream. Using this EVM, the receiver or the transmitter can advantageously generate an optimized modulation and coding scheme (MCS) that corresponds to a specific number of streams, modulation and coding rate for the transmitter. For example, the receiver can compute an SNR from the EVM and then use an SNR vs. MCS table to determine the optimized MCS. In contrast, the transmitter can receive an EVM-to-RSSI mapping and an EVM- to-MCS mapping from the receiver. These mappings and an EVM can facilitate selecting the optimized MCS.
摘要翻译：可以使用每个流的计算误差向量幅度（EVM）来测量精确的总错误率性能。使用该EVM，接收机或发射机可以有利地生成对应于发射机的特定数量的流，调制和编码速率的优化的调制和编码方案（MCS）。例如，接收机可以从EVM计算SNR，然后使用SNR对MCS表来确定优化的MCS。相比之下，发射机可以从接收机接收EVM到RSSI映射和EVM到MCS映射。这些映射和EVM可以促进选择优化的MCS。

7. 发明申请

WO2006069176A3 DYNAMIC CHANNEL BANDWIDTH MANAGEMENT 审中-公开
标题翻译：动态频道带宽管理
公开(公告)号：WO2006069176A3
公开(公告)日：2007-02-22
申请号：PCT/US2005046430
申请日：2005-12-20
申请人： ATHEROS COMM INC , ZHANG NING , GILBERT JEFFREY M
发明人： ZHANG NING , GILBERT JEFFREY M
IPC分类号： H04J3/22 , H04L12/24 , H04L12/26
CPC分类号： H04W28/20 , H04K3/226 , H04K3/822 , H04K2203/18 , H04W76/04 , H04W88/06
摘要： To provide an extra bandwidth communication using standard channels, multiple non-overlapping channels (301, 302) can be used. To provide a 40 MHz communciatio, two non-ovrlapping 20 MHz channels (301,302), i.e. a control channel (301) and an extension channel (302), can be used to provide an effective 40 MHz channel. Advantageously, a wireless device can dynamically detect 20/40 MHz signals on a packet-by-packet basis, thereby facilitating commercially viable 40 MHz communciation. The wireless device can monitor traffic on the extension channel to facilitate accurate 20/40 MHz decision making. Protection, e.g. legacy preambles (311) and RTS/CTS headers (321, 322,...), can be provided on the control (301) and extension (302) channels.
摘要翻译：为了使用标准信道提供额外的带宽通信，可以使用多个非重叠信道（301,302）。为了提供40MHz通信，可以使用两个非ovrlapping 20MHz信道（301,302），即控制信道（301）和扩展信道（302）来提供有效的40MHz信道。有利地，无线设备可以逐个分组地动态地检测20/40MHz信号，从而促进商业上可行的40MHz通信。无线设备可以监控扩展通道上的流量，以便于准确的20/40 MHz决策。保护，例如可以在控制（301）和扩展（302）信道上提供传统前同步码（311）和RTS / CTS报头（321,322，...）。

8. 发明申请

WO03028327A2 EFFICIENT METHODS FOR FILTERING TO AVOID INTER-SYMBOL INTERFERENCE AND PROCESSING DIGITAL SIGNALS HAVING LARGE FREQUENCY GUARD BANDS 审中-公开
标题翻译：有效的方法来避免间断干扰和处理具有大量频率保护卡的数字信号
公开(公告)号：WO03028327A2
公开(公告)日：2003-04-03
申请号：PCT/US0230016
申请日：2002-09-19
申请人： ATHEROS COMM INC
发明人： BAAS BEVAN M , GILBERT JEFFREY M , MCFARLAND WILLIAM , MENG TERESA H , TEHRANI ARDAVAN MALEKI
IPC分类号： H03H17/02 , H04L5/06 , H04L7/00 , H04L25/03 , H04L27/00 , H04L27/26
CPC分类号： H04L25/03012 , H03H17/02 , H04L27/2628 , H04L27/265 , H04L2025/03414
摘要： A circular filtering system which prevents the problem of inter-symbol interference. The circular filtering system utilizes a buffer memory to store samples of a given symbol and provide only these samples to a linear filter such that the output of the filter, for any given symbol is formed by filtering only samples of that input symbol. Each symbol is filtered independent of other symbols hence eliminating inter-symbol interference caused by filtering. Where symbols are tolerant to a fixed phase shift for each symbol, the circular filtering system can be simplified by reducing the size of the buffer and introducing a multiplexer.
摘要翻译：一种圆形滤波系统，可防止符号间干扰问题。圆形过滤系统利用缓冲存储器来存储给定符号的样本，并且仅将这些样本提供给线性滤波器，使得对于任何给定符号的滤波器的输出仅通过对该输入符号的样本进行滤波来形成。每个符号被独立于其他符号进行滤波，从而消除由滤波引起的符号间干扰。在符号对每个符号进行固定相移的情况下，可以通过减小缓冲器的大小并引入多路复用器来简化圆形滤波系统。

9. 发明申请

WO2005048507A2 MULTI-CHANNEL BINDING IN DATA TRANSMISSION 审中-公开
标题翻译：数据传输中的多通道绑定
公开(公告)号：WO2005048507A2
公开(公告)日：2005-05-26
申请号：PCT/US2004036599
申请日：2004-11-02
申请人： ATHEROS COMM INC
发明人： HUSTED PAUL , MCFARLAND WILLIAM J , GILBERT JEFFREY M
IPC分类号： H04L12/28 , H04L12/56 , H04L29/06 , H04W74/00 , H04L
CPC分类号： H04W74/00 , H04L29/06 , H04L69/14 , H04W28/20
摘要： A system and method are described for binding together a plurality of wireless data communications channels, whereby an aggregate throughput improvement is realized. A master channel amongst the channels to be bound is compatible with existing standards-based wireless data communications equipment. The master channel serves to perform MAC association and flow control. Aggregate throughput is improved by sending and receiving either multiple sets of separately encoded packets, commonly encoded packets or redundantly encoded packets.
摘要翻译：描述了用于将多个无线数据通信信道绑定在一起的系统和方法，从而实现了聚合吞吐量的提高。要绑定的频道中的主频道与现有的基于标准的无线数据通信设备兼容。主信道用于执行MAC关联和流控制。通过发送和接收多组单独编码的数据包（通常是编码数据包或冗余编码数据包）来提高总体吞吐量。

10. 发明申请

WO2005036846A8 REPETITION CODING FOR A WIRELESS SYSTEM 审中-公开
标题翻译：无线系统的重复编码
公开(公告)号：WO2005036846A8
公开(公告)日：2006-05-11
申请号：PCT/US2004026575
申请日：2004-08-13
申请人： ATHEROS COMM INC
发明人： CHOI WON-JOON , SUN QINFANG , GILBERT JEFFREY M
IPC分类号： H04L1/08 , H04L27/04
CPC分类号： H04L1/08 , H04L1/0071
摘要： A system and method are disclosed for transmitting data over a wireless channel. In some embodiments, transmitting data includes receiving convolutionally encoded data and enhancing the transmission of the data by further repetition encoding the data.
摘要翻译：公开了一种通过无线信道发送数据的系统和方法。在一些实施例中，发送数据包括接收卷积编码的数据，并通过进一步重复编码数据来增强数据的传输。

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