TY  - JOUR
T1  - Multicarrier CDMA for cellular overlay systems.
JF  - IEEE Journal on selected areas in communications
A1  - Rainbolt, B.J
LA  - English
UL  - https://tuklas.up.edu.ph/Record/UP-99796217609350957
AB  - A code-division multiple access (CDMA) cellular overlay system is investigated, employing the idea of multicarrier CDMA, which has previously received significant attention as an alternative to traditional single-carrier CDMA. Overlay is pursued here as a means of long-term transition from narrowband cellular to CDMA cellular. A major result of this paper is the demonstration that the use of multicarrier CDMA in a fading channel is particularly beneficial to the narrowband system, as the CDMA users can reduce their transmitted powers as a result of diversity. Another significant conclusion is that the use of transmitter notching in the CDMA system in order to avoid active narrowband users outperforms a strategy in which a narrowband user is avoided by simply dropping the particular carrier which overlays it. Finally, results on the use of the minimum mean-squared error (MMSE) receiver in a fading channel are extended for use in the overlay scenario
KW  - BER.
KW  - CDMA cellular.
KW  - MMSE receiver.
KW  - Capacity limits.
KW  - Cellular overlay systems.
KW  - Code-division multiple access.
KW  - Diversity.
KW  - Fading channels.
KW  - Minimum mean-squared error.
KW  - Multiaccess interference.
KW  - Multicarrier CDMA.
KW  - Narrowband cellular.
KW  - Narrowband interference.
KW  - Narrowband system.
KW  - Notch filtering.
KW  - Transmitter notching.
ER  -