Table of Contents
Advertisement
16.3.4.9.3 LMS1 Parameter Packet. The LMS1 parameter packet is composed of seven
16-bit half-words and is described in the table below.
ADDRESS
NAME
Half-word 1
RES
Half-word 2
K
Half-word 3
CBASE
Half-word 4
M
Half-word 5
XYPTR
Half-word 6
EPTR
Half-word 7
RES
16.3.4.9.4 Application Example. The LMS1 is used in the echo cancellation update.
0
1
2
S
0
W
OFFSET + 0
OFFSET + 2
16.3.4.10 LMS2–COMPLEX COEFFICIENTS, COMPLEX SAMPLES, AND
REAL/COMPLEX SCALAR. The LMS2 function implements a basic FIR filter coefficients
update and the sample pointer is incremented by two, which is required for fractionally
spaced equalizer updates. The coefficients and input samples are complex numbers, but
the scalar is a real or complex number.
Figure 16-30. LMS2 Implementation Example
MOTOROLA
Table 16-16. LMS1 Parameter Packet
Reserved
Number of Taps-1.
Filter Coefficients Vector Base Address Pointer
Samples Buffer Size-1. The minimum sample buffer size is 8 (2 samples).
Pointer to New Sample Data Pointer
Pointer to Scalar
Reserved
3
4
5
6
7
I
Z
0
INDEX
I=1 (ONE ITERATION)
C n 1
+
C n i E X n i –
=
+
i
MPC823e REFERENCE MANUAL
Communication Processor Module
DESCRIPTION
8
9
10
11
0
0
0
×
12
13
14
15
01010
16-67
Advertisement
Table of Contents
