Space-Time Optimum Combining for CDMA Overlay for Personal Communications Systems

Authors:
A. Shah;A. M. Haimovich
Affiliations:
Center for Communications and Signal Processing Research, Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ 07102;Center for Communications and Signal Processing Research, Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ 07102
Venue:
Wireless Personal Communications: An International Journal
Year:
1998

Citing 3
Cited 2

An Introduction to Spread-Spectrum Communications

An Introduction to Spread-Spectrum Communications
Interactive High-Resolution Isosurface Ray Casting on Multicore Processors

IEEE Transactions on Visualization and Computer Graphics
Overview of wireless personal communications

IEEE Communications Magazine

The Performance of Space-Time Processing for Suppressing NarrowbandInterference in CDMA Communications

Wireless Personal Communications: An International Journal
Subspace-Based Schemes for NBI and MAI Suppression in DS-CDMA Communications

Wireless Personal Communications: An International Journal

Quantified Score

Hi-index	0.00

Visualization

Abstract

The requirement to suppress narrowband interferences in CDMA communication stems fromthe overlay concept, i.e., coexistence of different types ofsignals in the same frequency band. This paper describes the performance analysis of a direct-sequence (DS) CDMA personal communication systemsharing a common spectrum with narrowband microwave radio links in the1.85 to 1.99 GHz band. The coexistence of these two systemswithin the same frequency band will improve the overall spectrum efficiency,but will also cause interference to both systems. In this paper it isshown that joint spatial and temporal optimum combiningprovides an efficient means of improving the performance of the DS-CDMAsystem through cancellation of the narrowband signal and the co-channel interferences. The proposed space-time architectureprovides degrees of freedom for both diversity and interferencecancellation. It is shown that the joint space-time receiver is robustwith respect to the narrowband interference signal bandwidth and its carrier frequency offset from the DS-CDMA carrier frequency.