UC Irvine
EECS 141B
Spring 2013
HOMEWORK 3
(Due 5/23/2013)
1. The following are a set of classes for noiseless source codes.
1. Fixed-Length Codes: A code whose codeword length is fixed.
2. Variable-Length Codes: A code whose codeword length is not fixed.

UC Irvine
EECS 141B
Spring 2014
HOMEWORK 5
(Will not be collected)
1. Consider a second order PLL with the loop filter
and assume that the transmitter phase receives an input
!
#
$&% .
"
i.e., an abrupt change in the phase ( ) and frequency ( )

UC Irvine
EECS 141B
Spring 2013
HOMEWORK 4
(due 6/4/2013)
1. An analog signal with 4 kHz bandwidth is sampled at 1.25 times the Nyquist rate, and
each sample is quantized into one of 256 equally likely levels. The successive samples are
statistically inde

UC Irvine
EECS 141B
Spring 2013
HOMEWORK 2
(Due 4/30/2013)
1. In a quaternary communication system, one of the four signals
"!$#%
'&
)(*"!$#%+
is transmitted during the interval -,./,.0 , 01 3245 where 2 is a positive integer. All
signals are eq

UC Irvine
EECS 141B
Spring 2013
HOMEWORK 1
(Due 4/16/2013)
1.
(a) A pair of signals
and
have a common duration
product of this pair of signals is given by
where
and
are vector representations of
and
. Show that the inner
, respectively.
(b) As a followup

UC Irvine
EECS 141B
Spring 2016
MIDTERM EXAMINATION
Studennw:
Open notes and book. Attempt all questions.
:1
X
X X
>< >(
X X X X
X X X X X
X X X X X X
X X >< x x X g
A! 5 6 7 8 q I
0 0 O Q 0 0 Q
I) T/2 T ,
Assume the signals 31(t), 32(t), and s3(t) s