1995/01/01 by P. Zetterberg, Per Zetterberg, Björn Ottersten +1 · 257 citations
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Antenna (radio) #Antenna Design and Optimization #Antenna array #Base station #Cellular network #Channel (broadcasting) #Computer network #Computer science #Direction-of-Arrival Estimation Techniques #Electrical engineering #Electronic engineering #Engineering #Frequency allocation #Reuse #Spectral efficiency #Telecommunications #Topology (electrical circuits) #Transmission (telecommunications)
paper · open access · doi:10.1109/25.406634
published in IEEE Transactions on Vehicular Technology 44(3), 651-660 (Institute of Electrical and Electronics Engineers)
openalex publication_date 1995/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
In this paper we investigate the spectrum efficiency gain using transmitting antenna arrays at the base stations of a mobile cellular network. The proposed system estimates the angular positions of the mobiles from the received data, and allows multiple mobiles to be allocated to the same channel within a cell. This is possible by applying a transmit scheme which directs nulls against co-channel users within the cell. It is shown that multiple mobiles per cell is an efficient way of increasing capacity in comparison with reduced channel reuse distance and narrow beams (without directed nulls). The effect of the spatial spread angle of the locally scattered rays in the vicinity of the mobile is also investigated.>