參數(shù)資料
型號(hào)： HFA3861A
廠商： Intersil Corporation
元件分類： 基帶處理器
英文描述： Direct Sequence Spread Spectrum Baseband Processor(直接序列擴(kuò)頻基帶處理器)
中文描述： 直接序列擴(kuò)頻基帶處理器（直接序列擴(kuò)頻基帶處理器）
文件頁(yè)數(shù)： 19/36頁(yè)
文件大小： 279K
代理商： HFA3861A
19
Clock Offset Tracking Performance
The PRISM baseband processor is designed to accept data
clock offsets of up to
±
25ppm for each end of the link (TX
and RX). This effects both the acquisition and the tracking
performance of the demodulator. The budget for clock offset
error is 0.75dB at
±
50ppm. No appreciable degradation was
seen for operation in AWGN at
±
50ppm.
Carrier Offset Frequency Performance
The correlators used for acquisition for all modes and for
demodulation in the 1 and 2Mbps modes are time invariant
matched filter correlators otherwise known as parallel
correlators. They use two samples per chip and are tapped
at every other shift register stage. Their performance with
carrier frequency offsets is determined by the phase roll rate
due to the offset. For an offset of +50ppm (combined for both
TX and RX) will cause the carrier to phase roll 22.5 degrees
over the length of the correlator. This causes a loss of
0.22dB in correlation magnitude which translates directly to
Eb/N0 performance loss. In the PRISM chip design, the
carrier phase locked loop is inactive during acquisition.
During tracking, the carrier tracking loop corrects for offset,
so that no degradation is noted. In the presence of high
multipath and high SNR, however, some degradation is
expected.
FIGURE 14. BER vs Eb/N0 PERFORMANCE FOR PSK MODES
FIGURE 15. BER vs Eb/N0 PERFORMANCE FOR CCK MODES
7
8
9
10
11
12
Eb/N0
1.E+00
B
1.E-03
1.E-04
1.E-05
1.E-07
1.E-08
1.E-02
1.E-06
1.E-01
BER 1.0
BER 2.0
THY 1, 2
14
13
12
11
10
9
8
7
6
5
B
Eb/N0
1.E+00
1.E-03
1.E-04
1.E-05
1.E-07
1.E-08
1.E-02
1.E-06
1.E-01
1.E-09
BER 11
BER 5.5
THY 5.5
THY 11
HFA3861A
相關(guān)PDF資料
PDF描述
HFA3861B Direct Sequence Spread Spectrum Baseband Processor(直接序列擴(kuò)譜基帶處理器)
HFA3861 Direct Sequence Spread Spectrum (DSSS) baseband processor(直接序列擴(kuò)頻基帶處理器)
HFA3861IV Direct Sequence Spread Spectrum Baseband Processor
HFA3861IV96 Direct Sequence Spread Spectrum Baseband Processor
HFA3925 2.4GHz - 2.5GHz 250mW Power Amplifier(2.4GHz - 2.5GHz 250mW 功率放大器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HFA3861AIN 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband Processo
HFA3861AIN96 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband Processo
HFA3861B 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband Processor
HFA3861BIN 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband Processor
HFA3861BIN96 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband Processor
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*