公开(公告)号：US20180167134A1

公开(公告)日：2018-06-14

申请号：US15377892

申请日：2016-12-13

Applicant: Intelligent Fusion Technology, Inc

Inventor： Zijian MO ,  Zhonghai WANG ,  Gang WANG ,  Genshe CHEN ,  Tien NGUYEN ,  Khanh PHAM

IPC: H04B7/185 ,  H04B7/216

CPC classification number: H04B7/18513 ,  H04B7/216

Abstract: In accordance with various embodiments, a method for uplink multiple accessing based on code division multiple access (CDMA) technology and a related system are provided. The method comprises: designing a practical uplink spreading waveform for a code division multiple access (CDMA) based SCN by leveraging a plurality of pseudorandom sequences and investigating a channel coding block and a modulation block for the CDMA based SCN; determining an uplink frequency sub-band division for the CDMA based SCN to optimize a tradeoff between a performance and an implementation cost of CDMA based SCN; and specifying a configuration of a control system of the CDMA based SCN.

公开(公告)号：US20240219579A1

公开(公告)日：2024-07-04

申请号：US18072866

申请日：2022-12-01

Applicant: Intelligent Fusion Technology, Inc.

Inventor： Dan SHEN ,  Genshe CHEN ,  Tien NGUYEN ,  Khanh PHAM

IPC: G01S19/29 ,  G01S19/32

CPC classification number: G01S19/29 ,  G01S19/32

Abstract: A global navigation satellite system (GNSS) is disclosed comprising a transmitter. The transmitter is configured to: receive a plurality of frequencies; determine a minimum frequency from the plurality of frequencies; determine a maximum frequency from the plurality of frequencies; determine a carrier from the minimum frequency and the maximum frequency; determine a set of subcarriers from the carrier and the plurality of frequencies; identify optimal radius of desired phase points to select optimal subcarriers from the set of subcarriers; determine inter-modulation terms with a minimal energy based on the optimal subcarriers; and generate multi-carrier constant envelope waveforms based on the inter-modulation terms.