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61. 发明授权

US07974355B2 Method and apparatus for generating a permutation for forwarding link hopping in wireless communication system 有权
标题翻译：用于在无线通信系统中生成用于转发链路跳变的置换的方法和装置
公开(公告)号：US07974355B2
公开(公告)日：2011-07-05
申请号：US12091681
申请日：2006-10-27
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L5/0041 , H03M13/2725 , H03M13/276 , H03M13/2789 , H03M13/2957 , H04B1/7143 , H04J13/00 , H04L1/0003 , H04L1/0026 , H04L1/0625 , H04L5/0007 , H04L5/0026 , H04L5/005 , H04L25/0228 , H04L27/2602 , H04W52/54
摘要： A method and apparatus for generating a permutation for forward link hopping is provided, comprising initializing permutation constants, determining a value for p such that i is less than 2p wherein i is a first counter, initializing a second counter j to ‘0’, setting x to i+1 wherein x is index of elements of an array A, clocking a Pseudo-noise (PN) register n times to generate a pseudorandom number, setting x to p Least Significant Bits (LSB) of the pseudorandom number, incrementing j by 1, determining if x is greater than i, setting x equal to x−i, if x is greater than i, swapping the ith and xth element in the array A, decrementing counter i by 1, and mapping a set of hop-ports to a set of sub-carriers based upon the generated hop-permutation.
摘要翻译：提供一种用于产生用于前向链路跳变的置换的方法和装置，包括初始化置换常数，确定p的值使得i小于2p，其中i是第一计数器，将第二计数器j初始化为“0” x到i + 1其中x是阵列A的元素的索引，对伪噪声（PN）寄存器进行n次计时以产生伪随机数，将x设置为p的最小有效位（LSB），递增j 通过1，确定x是否大于i，将x设置为x-i，如果x大于i，则将阵列A中的第i和第x个元素进行交换，将计数器i递减1，并将一组hop- 端口到基于所生成的跳位排列的一组子载波。

62. 发明申请

US20100046447A1 BEACON SYMBOL ORTHOGONALIZATION 有权
标题翻译： BEACON符号正交定性
公开(公告)号：US20100046447A1
公开(公告)日：2010-02-25
申请号：US12446689
申请日：2007-10-26
申请人： Ravi Palanki , Alexei Gorokhov , Aamod Khandekar , Avneesh Agrawal
发明人： Ravi Palanki , Alexei Gorokhov , Aamod Khandekar , Avneesh Agrawal
IPC分类号： H04W72/04
CPC分类号： H04L27/261 , H04W28/00 , H04W72/04
摘要： Beacon symbols are sent periodically from the base stations in an OFDM system. The entire power of the base station, or a large portion of it is concentrated in these symbols, thus they are very easily recognized by the mobile stations. The frequencies upon which these symbols are transmitted and the time at which they are transmitted communicates information such as the base station/sector identity and the preferred carrier of the given base station/sector to the mobile station. In order to avoid collision between the beacon symbols of different base stations and sectors, the beacon symbols from different base stations/sectors are transmitted at different symbols times and on different subcarriers.
摘要翻译：信标符号在OFDM系统中从基站周期性地发送。基站的整个功率或其大部分集中在这些符号中，因此它们被移动台非常容易地识别。发送这些符号的频率和它们被发送的时间将诸如基站/扇区标识和给定基站/扇区的优选载波的信息传送给移动站。为了避免不同基站和扇区的信标符号之间的冲突，来自不同基站/扇区的信标符号在不同的符号时间和不同子载波上发送。

63. 发明申请

US20090327843A1 PRUNED BIT-REVERSAL INTERLEAVER 有权
标题翻译：经过翻转的双向交互
公开(公告)号：US20090327843A1
公开(公告)日：2009-12-31
申请号：US12489431
申请日：2009-06-23
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： H03M13/27 , H03M13/05 , G06F11/10 , H03M13/23
CPC分类号： H03M13/2789 , H03M13/2757 , H03M13/276
摘要： A pruned bit-reversal interleaver supports different packet sizes and variable code rates and provides good spreading and puncturing properties. To interleave data, a packet of input data of a first size is received. The packet is extended to a second size that is a power of two, e.g., by appending padding or properly generating write addresses. The extended packet is interleaved in accordance with a bit-reversal interleaver of the second size, which reorders the bits in the extended packet based on their indices. A packet of interleaved data is formed by pruning the output of the bit-reversal interleaver, e.g., by removing the padding or properly generating read addresses. The pruned bit-reversal interleaver may be used in combination with various types of FEC codes such as a Turbo code, a convolutional code, or a low density parity check (LDPC) code.
摘要翻译：修剪的位反转交错器支持不同的分组大小和可变代码率，并提供良好的扩展和打孔属性。为了交织数据，接收到第一大小的输入数据的分组。例如，通过附加填充或适当地生成写入地址，将分组扩展到二次幂的第二大小。扩展分组根据第二大小的位反转交织器进行交织，根据它们的索引对扩展分组中的比特进行重新排序。通过例如通过去除填充或适当地生成读取地址来修剪比特反转交织器的输出来形成交织数据的分组。修剪的位反转交织器可以与诸如Turbo码，卷积码或低密度奇偶校验（LDPC）码的各种类型的FEC码组合使用。

64. 发明申请

US20090254795A1 PRUNED BIT-REVERSAL INTERLEAVER 有权
标题翻译：经过翻转的双向交互
公开(公告)号：US20090254795A1
公开(公告)日：2009-10-08
申请号：US12371599
申请日：2009-02-14
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： H03M13/27 , G06F11/10
CPC分类号： H03M13/2789 , H03M13/2757 , H03M13/276
摘要： A pruned bit-reversal interleaver supports different packet sizes and variable code rates and provides good spreading and puncturing properties. To interleave data, a packet of input data of a first size is received. The packet is extended to a second size that is a power of two, e.g., by appending padding or properly generating write addresses. The extended packet is interleaved in accordance with a bit-reversal interleaver of the second size, which reorders the bits in the extended packet based on their indices. A packet of interleaved data is formed by pruning the output of the bit-reversal interleaver e.g., by removing the padding or properly generating read addresses. The pruned bit-reversal interleaver may be used in combination with various types of FEC codes such as a Turbo code, a convolutional code, or a low density parity check (LDPC) code.
摘要翻译：修剪的位反转交错器支持不同的分组大小和可变代码率，并提供良好的扩展和打孔属性。为了交织数据，接收到第一大小的输入数据的分组。例如，通过附加填充或适当地生成写入地址，将分组扩展到二次幂的第二大小。扩展分组根据第二大小的位反转交织器进行交织，根据它们的索引对扩展分组中的比特进行重新排序。通过修剪比特反转交织器的输出，例如通过去除填充或适当地生成读取地址来形成交织数据的分组。修剪的位反转交织器可以与诸如Turbo码，卷积码或低密度奇偶校验（LDPC）码的各种类型的FEC码组合使用。

65. 发明申请

US20090220033A1 METHOD AND APPARATUS FOR BIT DEMULTIPLEXING IN A WIRELESS COMMUNICATION SYSTEMS 有权
标题翻译：用于无线通信系统中的位解复用的方法和装置
公开(公告)号：US20090220033A1
公开(公告)日：2009-09-03
申请号：US12091628
申请日：2006-10-27
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： H04L27/06
CPC分类号： H04L5/0041 , H03M13/2725 , H03M13/276 , H03M13/2789 , H03M13/2957 , H04B1/7143 , H04J13/00 , H04L1/0003 , H04L1/0026 , H04L1/0625 , H04L5/0007 , H04L5/0026 , H04L5/005 , H04L25/0228 , H04L27/2602 , H04W52/54
摘要： A method and apparatus of bit demultiplexing for a rate 1/3 convolutional encoder in a wireless communication system, the method comprising, receiving bits from the rate-1/3 convolutional encoder, demultiplexing the received bits by distributing the bits sequentially into 3 sequences denoted as V0, V1 and V2 such that the first bit is going to the V0 sequence, the second bit is going to the V1 sequence and the third bit is going to the V2 sequence and ordering the sequences such that V0 is the first sequence, V1 is the second sequence and V2 is the third sequence.
摘要翻译：一种用于无线通信系统中的速率1/3卷积编码器的比特解复用方法和装置，所述方法包括：从速率-1 / 3卷积编码器接收比特，通过将所述比特顺序地分配给3 作为V0，V1和V2使得第一位进入V0序列，第二位进入V1序列，第三位进入V2序列，并对序列进行排序，使得V0是第一序列，V1 是第二个序列，V2是第三个序列。

66. 发明申请

US20060203932A1 Pilot transmission and channel estimation for a communication system utilizing frequency division multiplexing 有权
标题翻译：利用频分复用的通信系统的导频传输和信道估计
公开(公告)号：US20060203932A1
公开(公告)日：2006-09-14
申请号：US11175607
申请日：2005-07-05
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： H04L27/00
CPC分类号： H04B1/69 , H04L5/0007 , H04L5/0048 , H04L25/0212 , H04L25/022 , H04L25/023 , H04L25/025 , H04L27/2613 , H04L2025/03624
摘要： A transmitter generates a pilot having a constant time-domain envelope and a flat frequency spectrum based on a polyphase sequence. To generate a pilot IFDMA symbol, a first sequence of pilot symbols is formed based on the polyphase sequence and replicated multiple times to obtain a second sequence of pilot symbols. A phase ramp is applied to the second pilot symbol sequence to obtain a third sequence of output symbols. A cyclic prefix is appended to the third sequence of output symbols to obtain an IFDMA symbol, which is transmitted in the time domain via a communication channel. The pilot symbols may be multiplexed with data symbols using TDM and/or CDM. A pilot LFDMA symbol may also be generated with a polyphase sequence and multiplexed using TDM or CDM. A receiver derives a channel estimate based on received pilot symbols and using minimum mean-square error, least-squares, or some other channel estimation technique.
摘要翻译：发射机产生具有恒定时域包络和基于多相序列的平坦频谱的导频。为了产生导频IFDMA符号，基于多相序列形成第一导频符号序列并多次复制以获得导频符号的第二序列。将相位斜坡施加到第二导频符号序列以获得第三输出符号序列。循环前缀被附加到第三输出符号序列以获得经由通信信道在时域中发送的IFDMA符号。可以使用TDM和/或CDM将导频符号与数据符号复用。也可以使用多相序列生成导频LFDMA符号，并使用TDM或CDM进行复用。接收机基于接收到的导频符号并使用最小均方误差，最小二乘法或一些其它信道估计技术来导出信道估计。

67. 发明授权

US08798665B2 Beacon-based control channels 有权
标题翻译：基于信标的控制通道
公开(公告)号：US08798665B2
公开(公告)日：2014-08-05
申请号：US12163812
申请日：2008-06-27
申请人： Ravi Palanki , Avneesh Agrawal , Alexei Gorokhov , Aamod Khandekar , Ashwin Sampath , Dexu Lin
发明人： Ravi Palanki , Avneesh Agrawal , Alexei Gorokhov , Aamod Khandekar , Ashwin Sampath , Dexu Lin
IPC分类号： H04W48/12
CPC分类号： H04L5/0053 , H04L1/0056 , H04L1/0072 , H04L5/0096 , H04L27/10 , H04W4/20
摘要： Systems and methodologies are described that facilitate transmitting control information in wireless networks. Portions of bandwidth can be blanked for transmitting control information, and the control information transmitters can utilize beacon symbols to convey the control information. In this regard, interference is mitigated with respect to data transmissions over the control information bandwidth. Selected frequencies of the beacon symbols in a codeword can be used to indicate the control information. The codewords can be encoded with an error control code to provide redundancy for decoding in the presence of some interference.
摘要翻译：描述了有助于在无线网络中发送控制信息的系统和方法。可以将部分带宽消隐以发送控制信息，并且控制信息发射机可以利用信标符号来传达控制信息。在这方面，相对于控制信息带宽上的数据传输，减轻了干扰。可以使用码字中的信标符号的选定频率来指示控制信息。可以用错误控制码对码字进行编码，以在存在一些干扰的情况下提供用于解码的冗余。

68. 发明授权

US08738056B2 Signal acquisition in a wireless communication system 有权
标题翻译：无线通信系统中的信号采集
公开(公告)号：US08738056B2
公开(公告)日：2014-05-27
申请号：US11751467
申请日：2007-05-21
申请人： Alexei Gorokhov , Aamod Khandekar , Ravi Palanki
发明人： Alexei Gorokhov , Aamod Khandekar , Ravi Palanki
IPC分类号： H04B15/00 , H04W4/00 , H04B7/00
CPC分类号： H04L27/2613 , H04B1/7075 , H04B2201/70701 , H04L5/0023 , H04L5/0048 , H04L27/2655
摘要： Systems and methodologies are described that generate pilots for signal acquisition in a wireless communication system based on time domain sequences. The pilots may be generated by a base station and transmitted in a pilot field to one or more access terminals to aid in signal acquisition at each of the access terminals. One of the pilots may be common to all access points in the wireless communication system, thereby allowing an access terminal to obtain a timing estimate for the system while minimizing the effects of interference variations between base stations. Further, one or more generated pilots may be unique to each access point in order to allow each respective access point to be identified by its generated pilots.
摘要翻译：描述了在基于时域序列的无线通信系统中生成用于信号采集的导频的系统和方法。导频可以由基站产生并在导频字段中发送到一个或多个接入终端，以帮助在每个接入终端处的信号采集。其中一个导频对于无线通信系统中的所有接入点可能是共同的，从而允许接入终端获得系统的定时估计，同时最小化基站之间的干扰变化的影响。此外，一个或多个生成的导频可以对于每个接入点是唯一的，以便允许通过其生成的导频来识别每个相应的接入点。

69. 发明授权

US07957327B2 Efficient support for TDD beamforming via constrained hopping and on-demand pilot 有权
标题翻译：通过约束跳跃和按需飞行员对TDD波束成形的有效支持
公开(公告)号：US07957327B2
公开(公告)日：2011-06-07
申请号：US11435572
申请日：2006-05-16
申请人： Aamod Khandekar , Arak Sutivong , Ravi Palanki
发明人： Aamod Khandekar , Arak Sutivong , Ravi Palanki
IPC分类号： H04Q7/36
CPC分类号： H04W24/00 , H04B1/713 , H04L5/0026 , H04L5/0044 , H04L5/0048 , H04L5/006 , H04L5/0064 , H04L5/023 , H04L5/1461 , H04L5/1469 , H04L25/0226 , H04W28/20 , H04W72/042 , H04W88/08
摘要： Systems and methodologies are described that facilitate providing time-division duplexed beam-forming support in traditionally non-time-division duplexed wireless systems, such as an OFDMA system, a WCDMA system, etc. According to an aspect, a base station can analyze pilot information, such as a portion of bandwidth over which a user device is transmitting, and can transmit on the downlink using pre-hopped portion of bandwidth utilized by the user device on the preceding reverse link time slot. The base station can additionally transmit bandwidth segment reassignments to the user device to facilitate bandwidth segment hopping between user devices served by the base station. Additionally, the base station can instruct the user device to provide on-demand pilot information to resolve ambiguity related thereto.
摘要翻译：描述了有助于在诸如OFDMA系统，WCDMA系统等传统的非时分双工无线系统中提供时分双工的波束形成支持的系统和方法。根据一方面，基站可以分析导频信息，诸如用户设备正在发送的带宽的一部分，并且可以使用在前一反向链路时隙上的用户设备利用的带宽的预跳跃部分在下行链路上进行发送。基站可以另外向用户设备发送带宽段重新分配，以便于由基站服务的用户设备之间的带宽段跳频。此外，基站可以指示用户设备提供按需导频信息以解决与之相关的模糊性。

70. 发明授权

US07860149B2 Methods and apparatus for flexible hopping in a multiple-access communication network 有权
标题翻译：多址通信网络中灵活跳频的方法和装置
公开(公告)号：US07860149B2
公开(公告)日：2010-12-28
申请号：US11317413
申请日：2005-12-22
申请人： Ravi Palanki , Aamod Khandekar
发明人： Ravi Palanki , Aamod Khandekar
IPC分类号： H04B1/00
CPC分类号： H04L5/0007 , H04B1/7143 , H04L5/0021 , H04L5/0048 , H04L9/0625 , H04L2209/08 , H04L2209/80
摘要： Techniques for efficiently designing random hopping patterns in a communications system are disclosed. The disclosed embodiments provide for methods and systems for generating random hopping patterns, updating the patterns frequently, generating different patterns for different cells/sectors, and generating patterns of nearby sub-carriers for block hopping.
摘要翻译：公开了在通信系统中有效设计随机跳频模式的技术。所公开的实施例提供用于生成随机跳频模式，频繁更新模式，为不同小区/扇区生成不同模式以及生成用于块跳跃的附近子载波的模式的方法和系统。

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