公开(公告)号：US20100303160A1

公开(公告)日：2010-12-02

申请号：US12599682

申请日：2008-05-12

Applicant: Behrooz Rezvani ,  Farrokh Farrokhi

Inventor： Behrooz Rezvani ,  Farrokh Farrokhi

IPC: H04L27/28 ,  H04L27/00

CPC classification number: H04L27/2628 ,  H04L27/265

Abstract: A technique involves using a fast Fourier transform (FFT) module to transform multiple different types of signals. This may be accomplished using one or more of three techniques: logic within the FFT module can enable different processing depending upon a processing state, the FFT module can be called iteratively to transform a signal that is larger than the FFT implemented in the FFT module, the FFT module can be used for parallel transformation of multiple signals that are smaller than the FFT implemented in the FFT module. Thus, a single FFT module can be used to transform a first type of signal (e.g., WIFI) and a second type of signal (e.g., GPS) if configured according to the technique.

Abstract translation: 一种技术涉及使用快速傅立叶变换（FFT）模块来变换多种不同类型的信号。 这可以使用三种技术中的一种或多种实现：FFT模块内的逻辑可以根据处理状态启用不同的处理，可以迭代地调用FFT模块来变换大于FFT模块中实现的FFT的信号， FFT模块可以用于比FFT模块中实现的FFT小的多个信号的并行变换。 因此，如果根据该技术配置，则可以使用单个FFT模块来变换第一类型的信号（例如，WIFI）和第二类型的信号（例如，GPS）。

公开(公告)号：US20090116541A1

公开(公告)日：2009-05-07

申请号：US12288569

申请日：2008-10-20

Applicant: Farrokh Farrokhi ,  Andrea Goldsmith ,  Fredrik Brannstrom ,  Behrooz Rezvani

Inventor： Farrokh Farrokhi ,  Andrea Goldsmith ,  Fredrik Brannstrom ,  Behrooz Rezvani

IPC: H04B1/10 ,  H04B1/713 ,  H04B7/02

CPC classification number: H04B17/345

Abstract: A technique weights noise power used in a demodulation/demapping process using on an estimate of interference and its associated power. Using this technique the effect of partial interference can be ameliorated. For example, a value, σ2, can be used to represent the estimated noise and interference power, and σ2 can be used to modify a received signal to ameliorate the effects of noise and interference. σ2 can be adjusted in response to partial interference, and can be represented by the formula: σ2=σN2+q σI2, where σN2 is “noise power,” σI2 is “interference power,” and q is an interference correction factor.

Abstract translation: 一种技术对使用干扰估计和相关功率的解调/去映射处理中使用的噪声功率加权。 使用这种技术可以改善部分干扰的影响。 例如，可以使用sigma2来表示估计的噪声和干扰功率，并且可以使用sigma2来修改接收到的信号以改善噪声和干扰的影响。 sigma2可以响应于部分干扰来调整，并且可以由公式表示：sigma2 = sigmaN2 + q sigmaI2，其中sigmaN2是“噪声功率”，σI2是“干扰功率”，q是干扰校正因子。

公开(公告)号：US20070268980A1

公开(公告)日：2007-11-22

申请号：US11800357

申请日：2007-05-04

Applicant: Fredrik Brannstorm ,  Andrea Goldsmith ,  Farrokh Farrokhi ,  Behrooz Rezvani

Inventor： Fredrik Brannstorm ,  Andrea Goldsmith ,  Farrokh Farrokhi ,  Behrooz Rezvani

IPC: H04L23/02

CPC classification number: H04L25/03057 ,  H04B7/0848 ,  H04B7/086 ,  H04L2025/03426

Abstract: A technique for low-complexity high-performance coherent demodulation of GFSK signals involves utilizing a novel phase and frequency tracking mechanism coupled with a trellis search technique to track signal memory in the demodulation process. A method according to the technique may include modeling modulation based upon a trellis. The method may further include estimating unknown parameters, selecting a maximum likelihood path through the trellis, and mapping the maximum likelihood path to an output bit sequence. The technique is also applicable to DSPK and other applicable known or convenient protocols.

Abstract translation: 用于GFSK信号的低复杂度高性能相干解调的技术涉及利用与网格搜索技术相结合的新型相位和频率跟踪机制来在解调过程中跟踪信号存储器。 根据该技术的方法可以包括基于网格的建模调制。 该方法还可以包括估计未知参数，选择通过网格的最大似然路径，以及将最大似然路径映射到输出比特序列。 该技术也适用于DSPK和其他适用的已知或方便的协议。