[PDF] Top 20 Joint Performance Study of Channel Estimation and Multiuser Detection for Uplink Long Code CDMA Systems

... both channel es- timation and minimum mean-square-error (MMSE)/zero- forcing (ZF) receivers are presented in [15, ...ment channel estimation method has been proposed ...turbo multiuser ... See full document

... QS uplink of a MC- CDMA system, we first provide the analytical performance assessment of the direct blind MUD two-stage receiver pro- posed in [14], aimed at evaluating the performance degra- ... See full document

... the channel estimation algorithm based on the Fourier analysis requires an addi- tional condition on the coding sequences, which actually im- plies that for a given cycle, all antennas, except one, are ... See full document

... direct-sequence CDMA (DS-CDMA) is studied since it is deemed to be more suitable for mobile communications [31], ...ata detection for each user is accomplished independently of th a t performed on ... See full document

... nel estimation and multiuser detection for multi-rate ...a long duration of observation, but also some form of ...the channel is often required to be time-invariant during this ... See full document

... years multiuser detection techniques (MUD) have attracted significant attention to improve the performance of direct sequence code-division multiple-access (DS-CDMA) ...Multi-user ... See full document

... our multiuser scenario assumes KL resolvable ...the joint es- timation of the DOAs of all active ...the channel responses and data symbols of all active ...of channel estima- tion and data ... See full document

... tiuser joint symbol-channel estimation techniques in [19, 20] and can be called deterministic, since no statistical model of the sources is ...an uplink decorrelating RAKE receiver (DRR) algo- ... See full document

... communication systems. The major advantage of CDMA compared with Frequency Division Multiple Access (FDMA) and Time Division Multiple Access (TDMA) is the capacity increase, which was theoretically verified ... See full document

... We study the fundamental problem of optimal transmission scheduling in a code-division multiple-access wireless system in order to maximize the uplink system throughput, while satisfying the users ... See full document

... the channel characteristics one or the other of the complex and simple schemes shows better perfor- ...detailed performance comparison of both schemes can be found in ... See full document

... antenna systems are capable of achieving much better per- formance than single-antenna ...multiple-antenna systems under the as- sumption that perfect channel knowledge is available at the ...the ... See full document

... optimum multiuser detector. A further sub-optimum multiuser detector investigated was the minimum mean square error (MMSE) detector, where a biased version of the CCL matrix was inverted in order to ... See full document

... ML multiuser detector is impractical to im- ...suboptimal multiuser detection proposals, highlighted in [5] and the references therein, which sacrifice performance for the sake of a reduced ... See full document

... cellular systems to support high data rate ...unfavorable channel characteristic of mmWave frequency while achieving reasonable link bud- gets, beamforming using a number of antennas to form directive beams ... See full document

... the number of feasible scenarios can be significantly smaller. We note that cells that are heavily loaded are the ones which would significantly benefit from employing several interfer- ence management techniques in a ... See full document

... This section presents and discusses all of the results obtained by the computer simulation program written in Matlab2009b, following the analytical approach of a wireless communication system considering AWGN ... See full document

... subcarrier allocation scheme, which relies on the SSP method. Table 3 illustrates the parameters of this simula- tion. The simulation results are illustrated in Figure 8. Without using SSP, the variance error will always ... See full document

... volution operation. Moreover, the conjugate operators (H) should replace all the transpose operators (T). In this case, then, the cross-correlation matrix R = S H S is hermitian (as a result of combining the code ... See full document

... varying channel, we assumed a maximum mobile velocity of 50 km/h, which at the operating band of 2 GHz leads to a Doppler frequency of around 100 ...all channel estimates stored at the BS were the ones ... See full document