公开(公告)号：US08699978B1

公开(公告)日：2014-04-15

申请号：US13867789

申请日：2013-04-22

Applicant: Marvell International Ltd.

Inventor： Rohit U. Nabar ,  Hongyuan Zhang ,  Arul Durai Murugan Palanivelu

IPC: H04B1/18

CPC classification number: H04L25/0228 ,  H04B7/0413 ,  H04L5/0023 ,  H04L25/0204 ,  H04W72/085

Abstract: A plurality of training signal sets are transmitted. Each training signal set includes information sufficient to determine a channel estimate corresponding to a communication channel from a first station to a second station. A refined channel estimate is determined based on reception of the plurality of training signal sets.

Abstract translation: 发送多个训练信号组。 每个训练信号组包括足以确定对应于从第一站到第二站的通信信道的信道估计的信息。 基于多个训练信号组的接收来确定精细信道估计。

公开(公告)号：US09420594B1

公开(公告)日：2016-08-16

申请号：US14550511

申请日：2014-11-21

Applicant: Marvell International Ltd.

Inventor： Rohit U. Nabar ,  Hongyuan Zhang ,  Arul Durai Murugan Palanivelu ,  Hui-Ling Lou ,  Songping Wu

IPC: H04L27/28 ,  H04W72/08 ,  H04W88/06 ,  H04W24/10 ,  H04L27/26

CPC classification number: H04W72/085 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0069 ,  H04L5/0085 ,  H04L25/0204 ,  H04L25/0228 ,  H04L27/0008 ,  H04L27/261 ,  H04W24/10 ,  H04W88/06

Abstract: Methods and apparatus are provided for adaptively selecting a communications mode in high frequency systems. A first dual-mode device having capabilities of using two or more high frequency communications modes, such as OFDM and SC modulation, may transmit a signal to a second dual-mode device with the same capabilities. The second dual-mode device may compute a channel characteristic associated with a high frequency communications channel and select an optimal high frequency communications mode. The second dual-mode device may transmit information indicative of the channel characteristic or the selected communications mode to the first dual-mode device. The first dual-mode device may select and operate using the optimal high frequency communications mode based on the information received from the second dual-mode device. The first and second dual-mode devices may communicate using the selected high frequency communications mode.

Abstract translation: 提供了用于在高频系统中自适应地选择通信模式的方法和装置。 具有使用诸如OFDM和SC调制之类的两个或多个高频通信模式的能力的第一双模设备可以将信号发送到具有相同能力的第二双模设备。 第二双模设备可以计算与高频通信信道相关联的信道特性并选择最佳高频通信模式。 第二双模设备可以向第一双模设备发送指示信道特性或所选通信模式的信息。 第一双模设备可以基于从第二双模设备接收的信息，使用最佳高频通信模式来选择和操作。 第一和第二双模式设备可以使用所选择的高频通信模式进行通信。

公开(公告)号：US08958503B1

公开(公告)日：2015-02-17

申请号：US14097856

申请日：2013-12-05

Applicant: Marvell International Ltd.

Inventor： Rohit U. Nabar ,  Arul Durai Murugan Palanivelu

IPC: H04L27/00 ,  H04L1/00 ,  H04L25/02

CPC classification number: H04L1/0054 ,  H04L25/0204 ,  H04L25/024 ,  H04L25/067

Abstract: A method includes determining a mean square error σh2 of an estimate h of a communication channel, and receiving a data symbol y. The received data symbol y corresponds to a data symbol x transmitted over the communication channel. The method also includes determining a likelihood value for a bit in the transmitted data symbol x. Determining the likelihood value for the bit in the transmitted data symbol x includes calculating a quantity according to ⅇ -  y - hx  2 σ z 2 + σ h 2 ⁢  x  2 , where σz2 is a noise power associated with the communication channel. The method also includes calculating the likelihood value for the bit in the transmitted data symbol x as a function of the calculated quantity.

Abstract translation: 一种方法包括确定通信信道的估计h的均方误差＆sgr; h2，以及接收数据符号y。 所接收的数据符号y对应于通过通信信道发送的数据符号x。 该方法还包括确定发送数据符号x中的位的似然值。 确定发送数据符号x中的比特的似然值包括根据ⅇ - y - hx her 2＆sgr计算量; z 2 +＆sgr; 其中＆sgr; z2是与通信信道相关联的噪声功率。 该方法还包括根据计算出的数量计算发送数据符号x中的比特的似然值。

公开(公告)号：US20140072080A1

公开(公告)日：2014-03-13

申请号：US14077624

申请日：2013-11-12

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Arul Durai Murugan Palanivelu ,  Hui-Ling Lou ,  Songping Wu

IPC: H04L27/26

CPC classification number: H04L27/2649 ,  H04L1/0072 ,  H04L1/0079 ,  H04L5/0007 ,  H04L5/0092 ,  H04L25/0204 ,  H04L25/022 ,  H04L27/0008 ,  H04L27/0012 ,  H04L27/2601 ,  H04L27/2602

Abstract: Systems and methods are provided for processing a payload portion of a received signal in a single carrier mode or a multiple carrier mode based on a portion of the received signal. A single carrier signaling portion is received at a first rate, and whether the payload portion of the signal is a single carrier signal or a multiple carrier signal is detected from the received single carrier signaling portion. The payload portion of the received signal is received at the first rate and demodulated in a single carrier mode if the detecting determines that the payload portion of the received signal is a single carrier signal, and the payload portion of the received signal is demodulated in a multiple carrier mode if the detecting determines that the payload portion of the received signal is a multiple carrier signal.

Abstract translation: 提供了系统和方法，用于基于接收信号的一部分，以单载波模式或多载波模式处理接收信号的有效载荷部分。 以第一速率接收单载波信令部分，以及信号的有效载荷部分是单载波信号还是从所接收的单载波信令部分检测多载波信号。 如果检测结果确定接收信号的有效载荷部分是单载波信号，则以第一速率接收接收信号的有效载荷部分并以单载波模式进行解调，并且接收信号的有效载荷部分被解调为 多载波模式，如果检测确定接收信号的有效载荷部分是多载波信号。

公开(公告)号：US08649472B1

公开(公告)日：2014-02-11

申请号：US13758733

申请日：2013-02-04

Applicant: Marvell International Ltd.

Inventor： Robhit U. Nabar ,  Arul Durai Murugan Palanivelu

IPC: H04B1/00

CPC classification number: H04L25/0206 ,  H04L25/021 ,  H04L25/0256

Abstract: A plurality of sub-channel response estimates corresponding to a plurality of contiguous sub-channels in a communication channel are determined, and a plurality of weight coefficients are determined. The plurality of sub-channel response estimates are multiplied with the plurality of weight coefficients to generate a plurality of weighted sub-channel response estimates. A filtered sub-channel response estimate for one of the plurality of contiguous sub channels is generated using the plurality of weighted sub-channel response estimates.

Abstract translation: 确定与通信信道中的多个连续子信道相对应的多个子信道响应估计，并且确定多个加权系数。 多个子信道响应估计与多个加权系数相乘以产生多个加权子信道响应估计。 使用多个加权子信道响应估计来生成用于多个连续子信道之一的滤波后的子信道响应估计。