Results 131 to 140 of about 5,452 (173)

Overview of multicarrier CDMA

IEEE Communications Magazine, 1997
The authors present an overview of new multiple access schemes based on a combination of code division and multicarrier techniques, such as multicarrier code-division multiple access (MC-CDMA), multicarrier direct sequence CDMA (multicarrier DS-CDMA), and multitone CDMA (MT-CDMA).
S. Hara, R. Prasad
openaire   +1 more source

Channel estimation for multicarrier CDMA

2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100), 2002
Multicarrier CDMA (MC-CDMA) is a flexible and adaptable radio interface to provide dynamically changing bit rates and a variety of services on radio channels. An accurate channel estimate allows the use of multiuser detection and power loading to improve system performance. A blind linear multiuser channel estimator for MC-CDMA is proposed.
U. Tureli, D. Kivanc, H. Liu
openaire   +1 more source

Hierarchical wideband multicarrier CDMA systems

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002
Hierarchical wideband multicarrier CDMA (MC-CDMA) systems are studied. A MC-CDMA system divides the system bandwidth into several equal narrow subbands that are used to transmit multiple signal waveforms in parallel. MC-CDMA systems are known to be robust to multipath fading and narrowband interference.
J.Y. Kim, G.L. Stuber
openaire   +1 more source

Spectral Efficiency of Multicarrier CDMA

IEEE Transactions on Information Theory, 2005
We analyze the spectral efficiency (sum-rate per subcarrier) of randomly spread synchronous multicarrier code-division multiple access (MC-CDMA) subject to frequency-selective fading in the asymptotic regime of number of users and bandwidth going to infinity with a constant ratio.
TULINO, ANTONIA MARIA, LI L., VERDU S.
openaire   +2 more sources

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