FHSS

11 wireless LAN standard and PHY characteristic, then describes DSSS and FHSS based on 802.

11b传输技术的直接序列扩频(DSSS)和跳频扩频(FHSS)技术,并在性能上进行了分析比较。

On the base of introducing bluetooth′s skill of physical characteristics,FHSS,protocol standards,the paper analyzes bluetooth′s safe measures of FHSS?judging right?data integrality and security,gives useful safety mends of practical pseuorandom sequence,secret key exchange and VPN.

在介绍蓝牙技术的物理特性、跳频扩频、协议规范等技术的基础上 ,详细分析了蓝牙技术的跳频扩频、鉴权、数据完整和加密等安全措施 ,并给出有一定实用性的伪随机码加密、密钥交换和基于传输层的 VPN等安全改进或加强措

This technique is based on the analysis of system capacity in WPAN standard, which uses FHSS schemes such as Bluetooth.

对采用跳频扩频方案的无线个域网标准的系统容量进行了分析,在此基础上,提出了采用包长度自适应控制技术来提高系统容量的方法,并以跳频扩频的蓝牙系统为例,分析了蓝牙ACL包和SCO包采用自适应包长度控制技术与固定包长度传输时的系统容量变化。

A New Type Frequency Hopping and Direct-sequence Spread-spectrum (FH/DS)Communication System;

一种新型跳频/直扩(FH/DS)通信系统

An algorithm of DOA estimation for multicomponet FH/DS signals based on spatial time-frequency analysis is proposed, which can realize exact DOA estimation in underdetermined condition.

提出了一种基于空时频分析的跳频/直扩(Frequency Hopping & Direct Sequence,FH/DS)信号的波达方向(DOA,Direction of Arrival)估计方法,该方法能够在欠定条件下(传感器数目小于信号数目)实现多个FH/DS信号的精确测向。

Telemetry Performance Analysis of DS/FH Hybrid Spread Spectrum Signal

直扩/跳频混合扩频信号测量性能分析

According the high dynamic characteristic of TT&C signals,a fast synchronization scheme for DS/FH hybrid spread spectrum signals is proposed.

针对航天测控信号的高动态特点,提出了直扩/跳频混合扩频(DS/FH)测控信号的一种快速同步方案。

Finally, it analyses several typical spread spectrum m anners, including DSSS?FHSS? THSS and FH / DS, and their fields of applications.

文中阐述了扩频通信系统的特点,分析了扩频通信可行性的理论基础,即信息论中关于信息容量的香农公式和柯捷尔尼可夫关于信息差错概率公式,指出了扩频通信的主要性能指标,给出了扩频通信的数学模型和物理模型,最后分析了几种典型的扩频方式(包括直接序列扩频、跳频扩频、跳时扩频和直扩/跳频混合扩频)及其应用领域。

Frequency-hopping spread spectrum (FHSS) was developed by the military for secure communications.

跳频扩频（FHSS）是由军方为保密通信开发的。

Frequency Hopping-Based Anti-jam Protocol in Wireless Ad Hoc Network

基于跳频扩频技术的抗干扰Ad Hoc网络协议

Telemetry Performance Analysis of DS/FH Hybrid Spread Spectrum Signal

直扩/跳频混合扩频信号测量性能分析

Analysis of Anti-jamming Ability of DS/FH Systems

跳频/扩频电子系统抗干扰性能分析

The Properties of DS/FH Spread Spectrum Communication System in Anti-Interference Capability

对直扩/跳频混合扩频系统抗干扰能力的研究

The study of FH/MCFD/SSMA wireless communication systems

跳频/多载波频率分集/扩频多址无线通信系统的研究

Study of Carrier Recovery and Spread Spectrum Transceiver Adopting DSSS and HFSS Technologies;

采用直扩（DSSS）和跳频（FHSS）技术的扩频收发信机及载波恢复研究

Spread-frequency communication is a new kind of techniques one of which is Frequency-hopping(FH).

扩展频谱通信是一种新的通信方式。 跳频通信是扩展频谱通信中的一种。

Research and Implementation of DS/FH Key Technologies in MANETs

自组织网直扩/跳频关键技术研究与实现

An airborne station DS/FH synthesizer based on FPGA

基于FPGA的某电台检测仪的扩跳频信号源

Wavelet-Based Excision of FH Interference in DSSS Communication

直扩通信中基于小波变换的跳频干扰抑制方法

Design of Frequency Hopping Synthesizer in Frequency Hopping Transceiver

跳频收发系统中的跳频频率合成器设计

Study on Spreading Sequence Design for Spread-Spectrum Communication Systems;

扩频通信系统中扩频序列设计的研究

Study of Chaotic Sequence in DS-SS Communication System;

直接扩频系统中混沌扩频序列的研究

Analysis and realization of wide-band frequency synthesizer in hopping communications

跳频通信宽频段频率合成器的分析与实现

jittered pulse recurrence frequency

跳动的脉冲重复频率

frequency hopping code division multiple access demodulator

跳频码分多址解调器

Research and Design of Frequency Hopping Synthesizer Based on DDS;

基于DDS的跳频频率合成器研究与实现