The direct sequence spread spectrum (DSSS) technology has advantages in high-reliability applications, whereas the frequency hopping spread spectrum (FHSS) technology has advantages in low-cost applications. Generally, DSSS fast transmits data in full-band mode, and allows for a h...
• In DSSS, information bits are spread across both frequency and time planes, hence minimizes effect of interference as well as fading. Hence DSSS system prone to errors but at low level compare to FHSS systems. FHSS produces strong bursty errors. • DSSS delivers capacity upto 11 Mbps wh...
direct sequence spread spectrum (DSSSfrequency-hopping spread spectrum (FHSSlow-probability-of-detection (LPD) techniquesmilitary communication systemsmodulation ... Z Zhu,AK Nandi - John Wiley & Sons, Ltd 被引量: 4发表: 2014年 IEEE 802.15.1 Simulation and BER Analysis under the Interference Bluet...
Optimal FHSs and DSSs via near zero-difference balanced functions - ScienceDirectConstant composition codeDifference system of setsConstant weight codeFrequency-hopping sequenceNear zero-difference balanced functionZero-difference balanced (ZDB) functions were introduced by Ding in connection with constructions...
a可以看到,与一般的扩频波形(直接序列扩频DSSS或跳频扩频FHSS)不同,UWB波形的扩频带宽是直接产生的,即单个比特未经扩频序列如PN码调制,本质上是时域概念。另外,DSSS、FHSS波形是恒包络,扩频波形占空比为100%,即峰平比相等,在UWB中,脉冲持续时间相对脉冲间隔很短,波形的占空比为一个小的百分数,峰平比很大。 正在...
Explain FHSS and DSSS with Examples. Contribute to rayvonnee/FHSS-DSSS development by creating an account on GitHub.
Performance Comparative Study of FHSS and DSSS over WLAN This research is devoted to analyzing the properties ofFrequency hopping and direct sequence of spread spectrumtechnologies and to compare their performance in order to determine which one is superior.A simulation was performed using OPN... ISO...
A 3D ray tracing program developed at the Center for Wireless Information Network Studies at Worcester Polytechnic Institute for the simulation of micro-cellular radio propagation is used to generate the impulse response between two nodes of a wireless LAN, when the transmitter and receiver are locate...
型号 AT10II 私模 是 附件类型 无人机遥控 尺寸 360*290 * 130mm 重量 0.95kg 应用程序 空中农业工业无人机等 调制方式 QPSK 信道带宽 5.0 MHz 扩频 DSSS和FHSS 工作电压 7.4 ~ 15.0V 通道数量 12频道 控制距离 4000米以上空气 包装和发货信息
DSSS和FHSS 发射机功率 <100mW (20dbm) 工作电流 <105mA 信号支持 PWM/SBUS/PPM 频率 2.4ghz ISM频段 (2400mhz至2483.5MHz) 认证 CE/FCC/RoHS 包装和发货信息 销售单位: 单一商品 单品包装尺寸: 39X29X15 厘米 单品毛重: 1.500 公斤 展开 交...