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1. 发明授权

US07457639B2 Successive interference cancellation receiver processing with selection diversity 失效
标题翻译：连续干扰消除接收机处理与选择分集
公开(公告)号：US07457639B2
公开(公告)日：2008-11-25
申请号：US11137982
申请日：2005-05-24
申请人： Anand D. Subramaniam , Tamer Kadous
发明人： Anand D. Subramaniam , Tamer Kadous
IPC分类号： H04B1/38 , H04B17/00
CPC分类号： H04L1/0687 , H04B7/0602 , H04B7/0802 , H04L1/0003 , H04L1/0009
摘要： Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
摘要翻译：提供技术以支持具有选择分集的连续干扰消除（SIC）接收机处理，从而N T个发射天线中的每一个可以被接通或断开。一个符号流可以从每个发送天线发送。 SIC接收器以特定顺序恢复发送的符号流。直到N＆lt; T＆gt;！对订单进行评估。对于每个排序，对于N T T T个发射天线获得N检测后的SNR，并且用于确定N T T T T T T T T T T T T N T N T N T T T T N T T N T N T T N T T N T N T 如果后检测SNR比最小所需SNR更差，速率为零。基于N SUB数据速率对每个排序计算总体数据速率。选择具有最高总数据速率的排序使用。按照所选择的排序和发送的数据速率处理多达N个T个符号流。所发送的符号流根据所选择的顺序被恢复。

2. 发明授权

US07095790B2 Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation 有权
公开(公告)号：US07095790B2
公开(公告)日：2006-08-22
申请号：US10375191
申请日：2003-02-25
申请人： Ranganathan Krishnan , Anand D. Subramaniam , Tamer Kadous
发明人： Ranganathan Krishnan , Anand D. Subramaniam , Tamer Kadous
IPC分类号： H04K1/10 , H04J11/00
CPC分类号： H04W52/42 , H04B7/0667 , H04L5/0023 , H04L5/0048
摘要： Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.

3. 发明授权

US08355354B2 Local and wide-area transmissions in a wireless broadcast network 有权
标题翻译：无线广播网络中的本地和广域传输
公开(公告)号：US08355354B2
公开(公告)日：2013-01-15
申请号：US12646520
申请日：2009-12-23
申请人： Rajiv Vijayan , Fuyun Ling , Gordon K. Walker , Murali R. Chari , Ashok Mantravadi , Anand D. Subramaniam
发明人： Rajiv Vijayan , Fuyun Ling , Gordon K. Walker , Murali R. Chari , Ashok Mantravadi , Anand D. Subramaniam
IPC分类号： H04H20/71
CPC分类号： H04L5/0041 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L12/189 , H04W72/005
摘要： To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
摘要翻译：为了在无线广播网络中广播具有不同层次的不同类型的传输，每个基站根据第一模式（或编码和调制方案）处理广域传输的数据，以产生广域的数据符号根据第二模式传输和处理用于本地传输的数据，以产生用于本地传输的数据符号。分别基于广域和本地传输的期望覆盖来选择第一和第二模式。基站还为本地和广域传输生成导频和开销信息。用于本地和广域传输的数据，导频和开销信息被复用到它们的传输跨度，其可以是不同组的频率子带，不同时间段或不同时间段中的不同子带组。多于两种不同类型的传输也可以被复用和广播。

4. 发明申请

US20100003931A1 TRANSMISSION SCHEMES FOR MULTI-ANTENNA COMMUNICATION SYSTEMS UTILIZING MULTI-CARRIER MODULATION 审中-公开
标题翻译：使用多载波调制的多天线通信系统的传输方案
公开(公告)号：US20100003931A1
公开(公告)日：2010-01-07
申请号：US12558073
申请日：2009-09-11
申请人： Ranganathan Krishnan , Anand D. Subramaniam , Tamer Kadous
发明人： Ranganathan Krishnan , Anand D. Subramaniam , Tamer Kadous
IPC分类号： H04B7/02
CPC分类号： H04W52/42 , H04B7/0667 , H04L5/0023 , H04L5/0048
摘要： Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.
摘要翻译：提供了利用多载波调制的多天线通信系统的导频和数据传输方案。使用子带复用来避免从多个天线同时发送多个信号导致的干扰。 M个可用的子带最初被布置成形成多个子带组，每组包括可用子带的不同子集。每个T发射天线然后被分配一个或可能更多的子带组用于导频传输，并且通常用于一个子带组用于数据传输。然后可以从分配给该天线的子带上的每个天线发送导频和数据用于导频和数据传输。对于每个发射天线，每个分配的子带的发射功率可以被缩放更高，使得可用于天线的全部发射功率被用于传输。导频和/或数据可以在所有可用子带上从所有T个天线同时传输而不引起相互干扰。

5. 发明授权

US07236640B2 Fixed, variable and adaptive bit rate data source encoding (compression) method 有权
标题翻译：固定，可变和自适应比特率数据源编码（压缩）方法
公开(公告)号：US07236640B2
公开(公告)日：2007-06-26
申请号：US10344586
申请日：2001-08-17
申请人： Anand D. Subramaniam , Bhaskar D. Rao
发明人： Anand D. Subramaniam , Bhaskar D. Rao
IPC分类号： G06K9/36 , G06K9/38 , G06K9/46 , G10L19/12 , G10L21/00 , H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： G10L19/038 , G10L19/008 , G10L19/06 , H03M7/3082
摘要： According to the invention, quantization encoding is conducted using the probability density function of the source, enabling fixed, variable and adaptive rate encoding. To achieve adaptive encoding, an update is conducted with a new observation of the data source, preferably with each new observation of the data source, preferably with each new observation of the data source. The current probability density function of the source is then estimated to produce codepoints to vector quantize the observation of the data source.
摘要翻译：根据本发明，使用源的概率密度函数进行量化编码，实现固定，可变和自适应速率编码。为了实现自适应编码，通过对数据源的新观察来进行更新，优选地利用数据源的每个新的观察，优选地对数据源的每个新的观察进行更新。然后估计源的当前概率密度函数以产生编码点以量化数据源的观察。

6. 发明授权

US07890144B2 Successive interference cancellation receiver processing with selection diversity 有权
标题翻译：连续干扰消除接收机处理与选择分集
公开(公告)号：US07890144B2
公开(公告)日：2011-02-15
申请号：US12257200
申请日：2008-10-23
申请人： Anand D. Subramaniam , Tamer Kadous
发明人： Anand D. Subramaniam , Tamer Kadous
IPC分类号： H04B1/38 , H04B17/00
CPC分类号： H04L1/0687 , H04B7/0602 , H04B7/0802 , H04L1/0003 , H04L1/0009
摘要： Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
摘要翻译：技术被提供以支持具有选择分集的连续干扰消除（SIC）接收机处理，从而可以打开或关闭每个NT个发射天线。一个符号流可以从每个发送天线发送。 SIC接收器以特定顺序恢复发送的符号流。达NT！对订单进行评估。对于每个排序，对于NT个发射天线获得NT后检测SNR，并且用于确定NT数据速率，其中如果后检测SNR比最小所需SNR更差，则数据速率为零。基于NT数据速率对每个排序计算总体数据速率。选择具有最高总数据速率的排序使用。最多NT个符号流以所选择的排序和传输的数据速率进行处理。所发送的符号流根据所选择的顺序被恢复。

7. 发明申请

US20100226303A1 METHOD FOR TRANSMITTING MULTIPLE STREAMS IN WIRELESS BROADCAST NETWORKS 有权
标题翻译：在无线广播网络中传输多条流的方法
公开(公告)号：US20100226303A1
公开(公告)日：2010-09-09
申请号：US12782406
申请日：2010-05-18
申请人： ASHOK MANTRAVADI , ANAND D. SUBRAMANIAM , KRISHNAMURTHY VISWANARHAN , DHANANJAY ASHOK GORE
发明人： ASHOK MANTRAVADI , ANAND D. SUBRAMANIAM , KRISHNAMURTHY VISWANARHAN , DHANANJAY ASHOK GORE
IPC分类号： H04H20/71 , H04L5/12
CPC分类号： H04H20/28 , H04H20/33 , H04H20/42 , H04H20/72 , H04L5/023 , H04L5/06
摘要： Accordingly, a method and apparatus are provided to convert received content into a first stream and a second stream, to transmit said first stream using a first tone and to transmit said second stream using an orthogonal scheme. A layering scheme is used to transmit the base stream covering a smaller area and an enhanced stream is used to cover a large utilizing orthogonal scheme.
摘要翻译：因此，提供了一种方法和装置，用于将接收到的内容转换为第一流和第二流，以使用第一音调发送所述第一流，并使用正交方案发送所述第二流。使用分层方案来传输覆盖较小区域的基本流，并且使用增强流来覆盖大的利用正交方案。

8. 发明授权

US07391918B2 Fixed, variable and adaptive bit rate data source encoding (compression) method 有权
标题翻译：固定，可变和自适应比特率数据源编码（压缩）方法
公开(公告)号：US07391918B2
公开(公告)日：2008-06-24
申请号：US11804028
申请日：2007-05-16
申请人： Anand D. Subramaniam , Bhaskar D. Rao
发明人： Anand D. Subramaniam , Bhaskar D. Rao
IPC分类号： G06K9/36 , G06K9/38 , G06K9/46 , G10L19/12 , G10L21/00 , H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： G10L19/038 , G10L19/008 , G10L19/06 , H03M7/3082
摘要： According to the invention, quantization encoding is conducted using the probability density function of the source, enabling fixed, variable and adaptive rate encoding. To achieve adaptive encoding, an update is conducted with a new observation of the data source, preferably with each new observation of the data source. The current probability density function of the source is then estimated to produce codepoints to vector quantize the observation of the data source.
摘要翻译：根据本发明，使用源的概率密度函数进行量化编码，实现固定，可变和自适应速率编码。为了实现自适应编码，通过数据源的新观察来进行更新，优选地利用数据源的每个新的观察。然后估计源的当前概率密度函数以产生编码点以量化数据源的观察。

9. 发明授权

US07787517B2 Method for transmitting multiple streams in wireless broadcast networks 有权
标题翻译：用于在无线广播网络中发送多个流的方法
公开(公告)号：US07787517B2
公开(公告)日：2010-08-31
申请号：US11046121
申请日：2005-01-28
申请人： Ashok Mantravadi , Anand D. Subramaniam , Krishnamurthy Viswanathan, legal representative , Dhananjay Ashok Gore
发明人： Ashok Mantravadi , Anand D. Subramaniam , Dhananjay Ashok Gore
IPC分类号： H04L27/30
CPC分类号： H04H20/28 , H04H20/33 , H04H20/42 , H04H20/72 , H04L5/023 , H04L5/06
摘要： Accordingly, a method and apparatus are provided to convert received content into a first stream and a second stream, to transmit said first stream using a first tone and to transmit said second stream using an orthogonal scheme. A layering scheme is used to transmit the base stream covering a smaller area and an enhanced stream is used to cover a large utilizing orthogonal scheme.
摘要翻译：因此，提供了一种方法和装置，用于将接收到的内容转换为第一流和第二流，以使用第一音调发送所述第一流，并使用正交方案发送所述第二流。使用分层方案来传输覆盖较小区域的基本流，并且使用增强流来覆盖大的利用正交方案。

10. 发明授权

US07606326B2 Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation 有权
标题翻译：利用多载波调制的多天线通信系统的传输方案
公开(公告)号：US07606326B2
公开(公告)日：2009-10-20
申请号：US11501130
申请日：2006-08-07
申请人： Ranganathan Krishnan , Anand D. Subramaniam , Tamer Kadous
发明人： Ranganathan Krishnan , Anand D. Subramaniam , Tamer Kadous
IPC分类号： H04B7/06 , H04B7/02
CPC分类号： H04W52/42 , H04B7/0667 , H04L5/0023 , H04L5/0048
摘要： Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.
摘要翻译：提供了利用多载波调制的多天线通信系统的导频和数据传输方案。使用子带复用来避免从多个天线同时发送多个信号导致的干扰。 M个可用的子带最初被布置成形成多个子带组，每组包括可用子带的不同子集。然后，每个T发射天线被分配一个或可能更多的子带组用于导频传输，并且通常用于数据传输的一个子带组。然后可以从分配给该天线的子带上的每个天线发送导频和数据用于导频和数据传输。对于每个发射天线，每个分配的子带的发射功率可以被缩放更高，使得可用于天线的全部发射功率被用于传输。导频和/或数据可以在所有可用子带上从所有T个天线同时传输而不引起相互干扰。

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