[PDF] Top 20 A joint-channel diagonalization for multiuser MIMO antenna systems

... of joint multiuser channel diagonaliza- tion, simulation results will reveal that the diagonalization is achieved under all configurations we have investigated, when- ever the “necessary” ... See full document

... Chang et al. analyzed in [11] the case of an uplink flat fading multiuser MIMO channel, where both the MTs and BS had multiple antennas. Two different optimization prob- lems were considered. In the ... See full document

... wireless channel has an individual and independent fading channel that is different from the other channels ...the MIMO system has captured significant attention, considering its possible ability to ... See full document

... multiple antenna transmissions utilizing space-time dispersion is proposed, where the original data stream is divided into K substreams which are modulated onto all available transmit antennas using ... See full document

... propagation channel and ever increasing pressure to im- prove capacity and data ...Smart antenna aided space-time pro- cessing is capable of substantially improving the achievable wire- less system ... See full document

... the MIMO broadcast channel, CSIT is required to separate the spatial channels for different ...MU- MIMO systems employing zero-forcing (ZF) or block- diagonalization (BD) precoding, it ... See full document

... communication systems, the number of antennas of BS is at most eight at present), so it is valuable for the design of the adaptive modulation and coding scheme in practical communication ...UE antenna, ... See full document

... It has been shown via theoretical derivations as well as by experiment that using multiple element antennas with a suitable signal transmission scheme in a rich scattering propagation environment can enhance peer-to-peer ... See full document

... communications systems. In the future generation wireless systems, ubiquitous delivery of high-speed high- quality services over air is anticipated whereas the physical susceptibility of a wireless ... See full document

... and channel encoding as well as various smart antenna techniques, for example space-time codes (STCs) [6], space division multiple access (SDMA) [1] and beamforming, as well as other multiple-input ... See full document

... invoking multiuser detection (MUD) [10, 13] techniques has recently attracted intensive research ...(MIMO) systems, the transmitted signals of L simultaneous uplink mobile users, each equipped with a ... See full document

... 2.1. System Model and Problem Formulation. In this section, we focus on the downlink of the multiuser cooperative MIMO relay system as illustrated in Figure 1. Assuming half duplex relaying, the scenario ... See full document

... fast antenna selection scheme at base station is presented in ...perfect channel state information at mobile ...plying channel estimation ...MMSE channel estimation ...of channel ... See full document

... The multiuser MIMO system having large number of base station antennas compared to the number of users is ...the channel estimation is performed by employing the uplink ...such systems ... See full document

... of joint channel estimation, equalization, and multiuser detection for a multiantenna DS/CDMA system operating over a frequency-selective fading channel and adopting long aperiodic spreading ... See full document

... In this paper, several detection schemes for multiple antenna systems are investigated, which make use of the LR algorithm proposed by [14]. It is shown that the performance of our proposed algorithm is ... See full document

... The optimized design with dimensional details of the proposed MIMO antenna is illustrated in Fig. 1.The dimensions are in millimetre (mm): W=120, L=160, a=10, b=20, c=20, d=60, e=20, f=20, g=10, h=30, i=60, ... See full document

... processing systems are frequently designed under the assumption that only a single, clean speech signal is present at the ...processing systems and continues to be an active research topic ... See full document

... numerous channel estimation and multiuser detection approaches have appeared for long-code uplink CDMA systems, joint performance study of channel estimators and symbol detectors ... See full document

... of joint symbol detection and channel estimation in DS/CDMA over flat-fading channels based on a genetic algorithm (GA) in- ...users’ channel coefficients as well as the transmitted bit sequences on ... See full document