... (OFDM)
●
IEEE 8 02. 11b (Wi-Fi)
■
11 Mbps (with fallback to 5.5, 2 and 1 Mbps) in the 2. 4 GHz
band
■
Uses DSSS
●
IEEE 8 02. 11g
■
20 + Mbps in the 2. 4 GHz band
Wireless Environment and Wireless LANs 32
WLANs/WPANs: ... for operation at 1 and 2 Mbps
■
DSSS, FHSS or infrared
■
Extensions (IEEE 8 02. 11b, IEEE 8 02. 11a, etc.) allow for
operation at higher data rates and (in the cas...
... AGC
Quantization noise variance:
2
Sat
2
Lin
22 2
)()(})]({[
σσσ
+==−=
∫
∞
∞−
dxxpxexqx
q
E
ll
L
l
l
qxp
q
)(
12
2
12/
0
2
2
Lin
∑
−
=
=
σ
Uniform q.
12
2
2
Lin
q
=
σ
Lecture 2 14
Uniform and non-uniform ... (M> ;2) requires less
bandwidth than binary PCM.
For a given average pulse power, binary PCM is
easier to detect than M-ary PAM (M> ;2) .
Mk
2
log=
Lecture...
...
http://www.informationfactory.com/digsec1.pdf
lecture 2. doc Page 1 (3)
CSN200 Introduction to Telecommunications, Fall 1999 Lecture_ 02
Parallel vs. Serial Transmission:
Parallel:
In ... CSN200 Introduction to Telecommunications, Winter 20 00 Lecture_ 02
Communication Concepts
Data Transmission Modes:
There are ... mode of communication used on a PC’s
serial p...
... by:
b
0
± t(α /2; n -2) x SE(b
0
) = (b
0
– t(α /2; n -2) x SE(b
0
); b
0
+ t(α /2; n -2) x SE(b
0
))
b
1
± t(α /2; n -2) x SE(b
1
) = (b
1
– t(α /2; n -2) x SE(b
1
); b
1
+ t(α /2; n -2) x SE(b
1
)) ... 0.570665305
R Square 0. 325 65889
Adjusted R Square 0.315 122 31
Standard Error 12. 721 84 023
Observations 66
ANOVA
Df SS MS F Significance F
Regression 1 50 02. 224 173...