TY  - JOUR
T1  - Linear and Nonlinear Precoding Techniques for MIMO Broadcast Channel
AU - Sobana, S. AU - Jeyanthi, K. Meena Alias 
JO  - Journal of Engineering and Applied Sciences
VL  - 9
IS  - 7
SP  - 273
EP  - 282
PY  - 2014
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2014.273.282
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2014.273.282
KW  - Multiple-Input Multiple-Output (MIMO)
KW  -Multiuser MIMO (MU-MIMO)
KW  -precoding
KW  -capacity
KW  -channel state information
KW  -Bit Error Rate (BER)
AB  - Digital communication using Multiple-Input Multiple-Output (MIMO) has recently emerged, as one of the most significant technical breakthroughs in modern communications. The concept of MIMO systems is used extensively in currently deployed technologies to provide necessary data rates. In the multiuser, MIMO broadcast channel the benefits are enhanced when the transmitter knows the channel. Exploitation of such channel information allows for increasing the channel capacity, improving error performance while reducing hardware complexity. In order to detect the signal at the users terminals without any cooperation between them precoding techniques is required. This study describes the basics of various precoding techniques, examining both theoretical foundations and practical issues. Fundamental measures of the MIMO systems are the capacity and the error exponent, the practical measures are the Pair-wise Error Probability (PEP), Mean Square-Error (MSE), Symbol Error Rate (SER), Bit Error Rate (BER) and the received SNR. A brief comparison is done between the performances of the system with and without precoder, various linear and nonlinear precoding techniques by analyzing the ergodic capacity and BER.
ER  -