公开(公告)号：US20120250807A1

公开(公告)日：2012-10-04

申请号：US13436090

申请日：2012-03-30

申请人： S. Harish Krishnan ,  Shrinivas Bhat

发明人： S. Harish Krishnan ,  Shrinivas Bhat

IPC分类号： H04L27/06

CPC分类号： H04L27/2605 ,  H04L27/2663 ,  H04L27/2666 ,  H04L27/2678 ,  H04L27/2688

摘要： A receiver and method of detecting a guard interval estimate accurately by performing an Nth order polynomial based non-linear quantization on a pre-estimated guard interval in a received Orthogonal Frequency Division Multiplexing (OFDM) signal in a receiver is provided. The pre-estimated guard interval is obtained by performing normalized auto-correlation on the received OFDM signal. The method includes (i) performing a rounding operation on (a) one or more mth coefficient of the polynomial and (b) the pre-estimated guard interval to obtain an indexing parameter ‘k’, and detecting the guard interval estimate based on (i) a value of k, and (ii) a guard interval from one or more guard intervals that are stored in a look up table. The guard interval estimate is detected in accordance with an equation: {tilde over (L)}=L[k−4], where ‘L’ is the guard interval stored in the look up table that corresponds to the value of k.

摘要翻译： 提供了一种通过在接收机中接收到的正交频分复用（OFDM）信号中对预估的保护间隔执行基于N阶多项式的非线性量化来准确地检测保护间隔估计的接收机和方法。 通过对所接收的OFDM信号进行归一化的自相关来获得预估的保护间隔。 该方法包括（i）对（a）多项式的一个或多个第m个系数和（b）预估保护间隔执行舍入运算以获得索引参数k，并且基于（i）检测保护间隔估计， k的值，以及（ii）存储在查询表中的一个或多个保护间隔的保护间隔。 根据以下等式来检测保护间隔估计：{tilde over（L）} = L [k-4]，其中L是存储在查找表中对应于k的值的保护间隔。

公开(公告)号：US20100211762A1

公开(公告)日：2010-08-19

申请号：US12708288

申请日：2010-02-18

申请人： Anindya Saha ,  Manish Kumar ,  Hemant Mallapur ,  Santhosh Billava ,  Viji Rajangam

发明人： Anindya Saha ,  Manish Kumar ,  Hemant Mallapur ,  Santhosh Billava ,  Viji Rajangam

IPC分类号： G06F9/38 ,  G06F9/30

CPC分类号： G06F9/325 ,  G06F9/30065 ,  G06F9/381 ,  G06F9/3853

摘要： A system to implement a zero overhead software pipelined (SFP) loop includes a Very Long Instruction Word (VLIW) processor having an N number of execution slots. The VLIW processor executes a plurality of instructions in parallel without any limitation of an instruction buffer size. A program memory receives a Program Memory address to fetch an instruction packet. The program memory is closely coupled with the instruction buffer size to implement the zero overhead software pipelined (SFP) loop. The size of the zero overhead software pipelined (SFP) loop can exceed the instruction buffer size. A CPU control register includes a block count and an iteration count. The block count is loaded into a block counter and counts the plurality of instructions executed in the SFP loop, and the iteration count is loaded into an iteration counter and counts a number of iterations of the SFP loop based on the block count.

摘要翻译： 实现零开销软件流水线（SFP）循环的系统包括具有N个执行时隙的超长指令字（VLIW）处理器。 VLIW处理器并行执行多个指令，而不受指令缓冲器大小的任何限制。 程序存储器接收程序存储器地址以获取指令包。 程序存储器与指令缓冲区大小紧密相连，以实现零开销软件流水线（SFP）循环。 零开销软件流水线（SFP）循环的大小可以超过指令缓冲区大小。 CPU控制寄存器包括块计数和迭代计数。 块计数被加载到块计数器中并对在SFP循环中执行的多个指令进行计数，并且将迭代计数加载到迭代计数器中，并且基于块计数对SFP循环的迭代次数进行计数。

公开(公告)号：US08571119B2

公开(公告)日：2013-10-29

申请号：US13435326

申请日：2012-03-30

申请人： Parag Naik ,  Anindya Saha ,  Hemant Mallapur ,  Sunil Hr ,  Gururaj Padaki

发明人： Parag Naik ,  Anindya Saha ,  Hemant Mallapur ,  Sunil Hr ,  Gururaj Padaki

IPC分类号： H04L27/00

CPC分类号： H04B1/0007 ,  H03M13/1102 ,  H03M13/152 ,  H03M13/27 ,  H03M13/2906 ,  H03M13/2936 ,  H03M13/6522 ,  H04H40/18 ,  H04N5/455 ,  H04N5/46 ,  H04N21/2383 ,  H04N21/4382

摘要： A Software Defined Radio (SDR) subsystem capable of supporting a multiple communication standards and platforms for modulation, demodulation and trans-modulation of an input signal is provided. The SDR subsystem includes a Signal Conditioning Cluster (SCC) unit that includes a signal conditioning CPU adapted for sample based signal processing, a Signal Processing Cluster (SPC) unit that includes a signal processing CPU adapted for block based signal processing, and a Channel Codec Cluster (CCC) unit that performs a channel encoding or a channel decoding operation.

摘要翻译： 能够支持用于输入信号的调制，解调和转换的多种通信标准和平台的软件定义无线电（SDR）子系统。 SDR子系统包括信号调节簇（SCC）单元，其包括适于基于采样的信号处理的信号调节CPU，包括适用于基于块的信号处理的信号处理CPU的信号处理簇（SPC）单元，以及信道编解码器 集群（CCC）单元执行信道编码或信道解码操作。

公开(公告)号：US20240097958A1

公开(公告)日：2024-03-21

申请号：US18110312

申请日：2023-02-15

申请人： SAANKHYA LABS PVT. LTD.

发明人： Raghavendra M A N S ,  Subrahmanya K S

IPC分类号： H04L27/26 ,  H04H20/71 ,  H04L5/00

CPC分类号： H04L27/26136 ,  H04H20/71 ,  H04L5/0048

摘要： A single frequency-based broadcast communication system includes a desired broadcast transmitter and one or more adjacent interfering broadcast transmitters in communication with a receiver over a communication channel is provided. Each of the broadcast transmitters includes a waveform generator for transmitting broadcast transmitter specific pilot signals to the receiver for receiving a superimposed transmitted broadcast transmitter specific pilot signal. The desired broadcast transmitter includes a pilot insertion module and a precoding filter module. The precoding filter module is designed to generate a transmitter specific precoding sequence based on a computed location index for specific pilot signals in a time frequency domain and precode a reference pilot signal to obtain the broadcast transmitter specific pilot signal sequences.

公开(公告)号：US20230062443A1

公开(公告)日：2023-03-02

申请号：US17281218

申请日：2020-05-20

申请人： Saankhya Labs Pvt. Ltd.

发明人： Arindam Chakraborty ,  Parag Naik ,  Anindya Saha ,  Vishwa Kayargadde ,  Susmit Kumar Datta

IPC分类号： H04W16/22 ,  H04W24/08

摘要： A radio mapping architecture for applying machine learning techniques to mobile wireless radio access networks, including a base station, a user equipment (UE), and a network is provided. The radio mapping architecture includes a spectrum monitoring unit and a server and utilizes the UE. The server includes a radio mapping database and a Machine Learning module. The UE or the spectrum monitoring unit captures Radio parameters to derive an input schema for the radio mapping database. The spectrum monitoring unit extracts the Radio parameters that correspond to the base station and the UE and updates them in the radio mapping database periodically. The input schema for the radio mapping database is updated with the Radio parameters sensed by the spectrum monitoring unit and the UE.

公开(公告)号：US20220095155A1

公开(公告)日：2022-03-24

申请号：US17420711

申请日：2020-06-05

申请人： Saankhya Labs Pvt. Ltd.

发明人： Parag Naik ,  Anindya Saha ,  Arindam Chakraborty ,  Preetham Uthaiah ,  Sandeep Pendharkar ,  Yogesh Singh ,  Deepak Samaga

IPC分类号： H04W28/02 ,  H04L65/80

摘要： A system and method for switching one or more User Equipment (UEs) 116A-N from a unicast mode to a broadcast or multicast mode to transmit a streaming media content to the UEs 116A-N is provided. The system includes, an Over-the-top (OTT) platform 104, a CDN 112, the UEs 116A-N, a cellular core network 202, one-to-many offload core 204, an analytics engine 206, a database 208, one-to-many transmitter 210, a real time switching module 212, a Cellular base station 214 and a user specified rules module 222. The analytics engine 206 continuously analyzes real-time and historical data stored in the database 208 to identify the UEs 116A-N that receive a streaming media content through the unicast mode and the streaming media content to be offloaded. An offload is a process by which certain portions of the streaming media content is shifted from the unicast mode to the broadcast or multicast mode.

公开(公告)号：US11259209B2

公开(公告)日：2022-02-22

申请号：US16620518

申请日：2019-09-12

申请人： Saankhya Labs Pvt. Ltd.

发明人： Parag Naik ,  Arindam Chakraborty ,  Makarand Kulkarni ,  Anindya Saha ,  Vishwakumara Kayargadde ,  Mark Andrew Aitken

IPC分类号： H04W28/02 ,  H04W28/08 ,  H04W36/22

摘要： A system and method for dynamically switching transmission of selected data from cellular core network to unidirectional point-to-multipoint downlink network or from unidirectional point-to-multipoint downlink network to cellular core network based on traffic flow analysis is provided. The system includes a cellular packet core 206, a broadcast offload packet core (BO-PC) 302, and a load manager 202. The cellular packet core 206 controls a cellular radio access network (RAN) 412 for providing bidirectional connectivity to a converged user equipment (UE) (204) to transmit or receive selected data through the cellular packet core 206 and the RAN 412. The BO-PC 302 controls a broadcast radio access network (RAN). The broadcast radio access network (RAN) includes at least one Broadcast Radio Head (BRH) 322 for providing unidirectional downlink path to the converged user equipment (UE) 204 to receive selected data through the at least one Broadcast Radio Heads (BRH) 322.

公开(公告)号：US20210345165A1

公开(公告)日：2021-11-04

申请号：US16620518

申请日：2019-09-12

申请人： Saankhya Labs Pvt. Ltd.

发明人： Parag Naik ,  Arindam Chakraborty ,  Makarand Kulkarni ,  Anindya Saha ,  Vishwakumara Kayargadde ,  Mark Andrew Aitken

IPC分类号： H04W28/02 ,  H04W28/08 ,  H04W36/22

摘要： A system and method for dynamically switching transmission of selected data from cellular core network to unidirectional point-to-multipoint downlink network or from unidirectional point-to-multipoint downlink network to cellular core network based on traffic flow analysis is provided. The system includes a cellular packet core 206, a broadcast offload packet core (BO-PC) 302, and a load manager 202. The cellular packet core 206 controls a cellular radio access network (RAN) 412 for providing bidirectional connectivity to a converged user equipment (UE) (204) to transmit or receive selected data through the cellular packet core 206 and the RAN 412. The BO-PC 302 controls a broadcast radio access network (RAN). The broadcast radio access network (RAN) includes at least one Broadcast Radio Head (BRH) 322 for providing unidirectional downlink path to the converged user equipment (UE) 204 to receive selected data through the at least one Broadcast Radio Heads (BRH) 322.

公开(公告)号：US10813146B1

公开(公告)日：2020-10-20

申请号：US16529637

申请日：2019-08-01

申请人： Saankhya Labs Pvt. Ltd.

发明人： Gururaj Padaki ,  Vishwakumara Kayargadde ,  Rajendra V Hegde ,  Anoop Hullenahalli

IPC分类号： H04W4/00 ,  H04W76/10 ,  H04W56/00 ,  H04W72/04

摘要： Disclosed is a system and method for establishing a device to device communication link in cellular networks. The system includes one or more user equipments, and a base station. The one or more user equipments includes a first user equipment and a second user equipment. The first user equipment is configured with a first user equipment cognitive engine and the second user equipment is configured with a second user equipment engine. The base station that is coupled to a cellular tower and configured with an evolved packet core EPC. The base station and at least one of the one or more user equipments performs a method for establishing the device to device communication link in the cellular network using a transmit to receive transition gap (TTG) and a receive to transmit transition gap (RTG).

公开(公告)号：US20120254274A1

公开(公告)日：2012-10-04

申请号：US13435073

申请日：2012-03-30

申请人： Gururaj Padaki ,  Saurabh Mishra ,  Suman Sanisetty

发明人： Gururaj Padaki ,  Saurabh Mishra ,  Suman Sanisetty

IPC分类号： G06F17/14

CPC分类号： G06F17/144

摘要： In one embodiment, a processor performs a method of generating pipelined data read indexes and data write indexes for a Prime Factor Algorithm (PFA) Discrete Fourier Transform (DFT) without look-up tables. The processor is adapted to factorize an ‘N’ point PFA DFT into one or more mutually prime factors and zero or more non-prime factors, calculate a 0th column index for an ith row (Xi0), calculate an IndCor when the value of Xi0 equals zero and when a row number (i) does not equal zero, calculate Xij, generate the data read indexes, perform a DFT kernel computation on Lk point for the mutually prime factors and the non-prime factors, and generate the data write indexes for the mutually prime factors and the non-prime factors. Xij represents ith row and jth column of 2D input Buffer and enables a selection of a linear index from the 2D input buffer.

摘要翻译： 在一个实施例中，处理器执行为没有查找表的Prime Factor Algorithm（PFA）离散傅立叶变换（DFT）生成流水线数据读索引和数据写入索引的方法。 处理器适于将N点PFA DFT分解成一个或多个互相因子和零个或多个非素因子，计算第i行（Xi0）的第0列索引，当Xi0的值等于零时计算IndCor 并且当行号（i）不等于零时，计算Xij，生成数据读取索引，对Lk点执行DFT内核计算的互相素因子和非素数因子，并生成数据写入索引 互惠因素和非素因素。 Xij表示2D输入缓冲区的第i行和第j列，并且可以从2D输入缓冲区中选择一个线性索引。