公开(公告)号：US20120244817A1

公开(公告)日：2012-09-27

申请号：US13099777

申请日：2011-05-03

申请人： Sajal Kumar DAS ,  Aravindh KRISHNAMOORTHY ,  Leela Srikar MUPPIRISETTY

发明人： Sajal Kumar DAS ,  Aravindh KRISHNAMOORTHY ,  Leela Srikar MUPPIRISETTY

IPC分类号： H04B17/00

CPC分类号： H04L27/18 ,  H04B17/327 ,  H04L5/12 ,  H04L25/0224 ,  H04W52/16

摘要： Described herein are various methods for a communication device (e.g., a mobile station) receiving an AQPSK modulated signal (e.g., a VAMOS signal) to estimate a subchannel power imbalance ratio (SCPIR). Advantageously, the methods are not computationally complex and do not suffer from poor numerical performance.

摘要翻译： 这里描述了用于接收AQPSK调制信号（例如，VAMOS信号）以估计子信道功率不平衡比（SCPIR）的通信设备（例如，移动站）的各种方法。 有利的是，这些方法在计算上不复杂，并且不会遭受差的数值性能。

公开(公告)号：US20130070828A1

公开(公告)日：2013-03-21

申请号：US13303268

申请日：2011-11-23

申请人： Sajal Kumar DAS ,  Aravindh Krishnamoorthy

发明人： Sajal Kumar DAS ,  Aravindh Krishnamoorthy

IPC分类号： H04L27/22 ,  H04L27/06 ,  H03D3/06 ,  H04B17/00

CPC分类号： H04L25/067 ,  H04L25/03057 ,  H04L25/03318 ,  H04L25/061 ,  H04L27/22 ,  H04L27/2331 ,  H04L2025/03407

摘要： A high-sensitivity receiver may be made by using multiple demodulators to demodulate a given signal. For example, the receiver may use a first demodulator to demodulate an input signal into a first sequence of soft bits and a second demodulator to demodulate the same input signal into a second sequence of soft bits. The two sequences of soft bits may then be compared and combined to create a sequence of hard bits. For example, in some embodiments, a soft bit combiner may combine the two sequences of soft bits into a third sequence of soft bits, which may then be input into a decoder to produce the final decoded hard bits. The secondary demodulator may be less complex, less expensive, demand less power, and/or require fewer computational resources when operating, than the first demodulator.

摘要翻译： 可以通过使用多个解调器来解调给定信号来制造高灵敏度接收机。 例如，接收机可以使用第一解调器将输入信号解调为第一软比特序列和第二解调器，以将相同的输入信号解调为第二个软比特序列。 然后可以比较和组合两个软比特序列以产生一个硬比特序列。 例如，在一些实施例中，软比特组合器可以将两个软比特序列组合成第三个软比特序列，然后将其输入解码器以产生最终解码的硬比特。 与第一解调器相比，次级解调器可能不那么复杂，较便宜，需要较少功率，和/或需要较少的运算资源。

公开(公告)号：US20140010267A1

公开(公告)日：2014-01-09

申请号：US13542168

申请日：2012-07-05

申请人： Naveen JACOB ,  Sajal Kumar DAS ,  Ravi JANDIAL

发明人： Naveen JACOB ,  Sajal Kumar DAS ,  Ravi JANDIAL

IPC分类号： H04B1/10

CPC分类号： H04B1/1027 ,  H04L1/0009 ,  H04L1/0014 ,  H04L1/20

摘要： A system and method are provided for estimating interference power at a receiver antenna in a communications systems receiver, in which an interference type signal associated with a received radio signal is detected, an in-band interference power associated with the received radio signal is determined, and an interference power at the antenna is estimated using the determined in-band interference power and the detected interference type. Estimating the interference power at the antenna includes interpolating the determined in-band interference power using scaling factors determined by the interference type signal associated with the received radio signal. The system and method determine in-band carrier power associated with the radio signal based on a channel estimate h(k), and the in-band interference information is based on interference samples I(n). In addition, an average total power, automatic gain control (AGC) setting, and signal-to-information-and-noise ratio can be determined by the system and method.

摘要翻译： 提供了一种用于估计通信系统接收机中的接收机天线的干扰功率的系统和方法，其中检测到与所接收的无线电信号相关联的干扰类型信号，确定与所接收的无线电信号相关联的带内干扰功率， 并且使用所确定的带内干扰功率和检测到的干扰类型来估计天线处的干扰功率。 估计天线的干扰功率包括使用由与所接收的无线电信号相关联的干扰类型信号确定的缩放因子来内插所确定的带内干扰功率。 系统和方法基于信道估计h（k）确定与无线电信号相关联的带内载波功率，并且带内干扰信息基于干扰样本I（n）。 另外，平均总功率，自动增益控制（AGC）设定和信号与信息噪声比可以通过系统和方法来确定。