© The Institution of Engineering and Technology
In this study, a simplified expression for improved Gaussian approximation is considered to model multiple access interference in an A-code division multiple access system. Punctured convolutional codes, which are one of the subclasses of convolutional codes, are employed to provide error protection to the information transmitted over the wireless channel. A detailed theoretical analysis is carried out initially and then compared with the simulated results for the various code rates. The simulated performance of the codes is then compared for different power levels and different number of interferers of the desired user. No phase information is assumed to be available for the information signal of the desired user throughout this study.
References
-
-
1)
-
J.G. Proakis
.
(1995)
Digital communications.
-
2)
-
V. Bhaskar ,
L. Joiner
.
Performance of punctured convolutional codes in asynchronous CDMA communications under perfect phase tracking conditions.
J. Comput. Electr. Eng.
,
573 -
592
-
3)
-
B. Sklar
.
(2001)
Digital communications: fundamentals and applications.
-
4)
-
J.W. Modestino ,
S.Y. Mui
.
Convolutional code performance in the Rician fading channel.
IEEE Trans. Commun.
,
6 ,
592 -
606
-
5)
-
Y.L. Chen ,
C.H. Wei
.
On the performance of rate-1/2 convolutional codes with QPSK on Rician fading channels.
IEEE Trans. Veh. Technol.
,
2 ,
161 -
170
-
6)
-
R.K. Morrow ,
J.S. Lehnert
.
Bit-to-bit error dependence in slotted DS/SSMA packet systems with random signature sequences.
IEEE Trans. Commun.
,
1 ,
1052 -
1061
-
7)
-
S.B. Wicker
.
(1995)
Error control systems for digital communications and storage.
-
8)
-
J. Caffery ,
G.L. Stuber
.
Non-linear multiuser parameter estimation and tracking in CDMA systems.
IEEE Trans. Commun.
,
12 ,
2053 -
2063
-
9)
-
Cheng, F., Holtzman, J.M.: `Effect of tracking error on DS-CDMA successive interference cancellation', IEEE Global Communications Conf., December 1994, San Francisco, LA, USA, p. 166–170.
-
10)
-
T.S. Rappaport
.
(1996)
Wireless communications: principles and practice.
-
11)
-
V. Bhaskar ,
L. Joiner
.
Performance of convolutional codes in asynchronous CDMA communications under imperfect phase tracking conditions.
IEEE Trans. Commun.
,
7 ,
2052 -
2059
-
12)
-
S. Bensley ,
B. Aazhang
.
Maximum likelihood synchronization of a single user for code-division multiple access communication systems.
IEEE Trans. Commun.
,
3 ,
392 -
399
-
13)
-
S. Verdu
.
(1988)
Multiuser detection.
-
14)
-
J.M. Holtzman
.
A simple, accurate method to calculate spread spectrum multiple access error probabilities.
IEEE Trans. Commun.
,
461 -
464
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-com.2011.0728
Related content
content/journals/10.1049/iet-com.2011.0728
pub_keyword,iet_inspecKeyword,pub_concept
6
6