This paper presents an efficient block Schur algorithm for the joint detection of several CDMA codes in third generation mobile radio systems. It can, for instance, be used in time-slotted CDMA mobile radio systems, mobile radio systems using multi carrier CDMA, and direct sequence CDMA systems. After rearranging the system matrix into a block Toeplitz matrix, the proposed block Schur algorithm...

In cellular mobile radio systems, the directional inhomogeneity of the mobile radio channel can be exploited by smart antennas to increase the spectral efficiency. In this paper, a novel smart antenna concept applying receiver antenna diversity at the uplink receiver is investigated for a time-slotted code-division multiple-access (CDMA) mobile radio air interface termed time-division CDMA (TD-...

Radio resource management is one of the key ways for providing quality-of-service (QoS) to users in wireless networks. In this paper, we propose a utility-based radio resource management scheme for mobile multimedia DS-CDMA systems. The algorithm is aiming at the maximization of the system overall utilities. In order to reduce the computational complexity, the radio resource management is decom...

The increasing demand for mobile radio services and the scarce bandwidth available suggest to devote considerable research eeorts to nd more eecient multiple access techniques in order to improve the system capacity. In this work we compare the system performance of three mobile radio systems: the well known TDMA system, which is the basis of the European GSM, the recent CDMA system (a standard...