Báo cáo hóa học: " Timing-Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae" pot

... with independent real and imaginary components and with co- variance matrix equal to σ 2 R.Ourobjectiveistoperform sequential symbol detection without knowing the CSI a n,k , that is, blind multiuser ... Blind Multiuser Detection by Particle Filtering 131 schemes without using pilot signals, or blind MUD methods. Blind MUD methods are bandwidth more efficient ... 45 SNR BER...

Ngày tải lên: 23/06/2014, 00:20

... performance for the MIMO systems with a sma ll number of antennas. In the sys- tems with a large number of antennas, we can achieve even higher complexity reduction without significant performance ... Access Low complexity antenna selection for V-BLAST systems with OSIC detection Youngtaek Bae and Jungwoo Lee * Abstract Multiple- input multiple- output (MIMO) systems have...

Ngày tải lên: 21/06/2014, 03:20

... theorems for discrete-time feedback systems and applications,” Automatica, vol. 40, no. 12, pp. 2129–2136, 2004. 19 I. Karafyllis, “Non-uniform in time robust global asymptotic output stability for ... discrete-time systems, ” International Journal of Robust and Nonlinear Control, vol. 16, no. 4, pp. 191–214, 2006. 20 I. Karafyllis, “Non-uniform robust global asymptotic stability...

Ngày tải lên: 21/06/2014, 20:20

... detector (P-DFD) [38] based on the MMSE criterion is considered for multiuser detection in the DS-UWB communication systems. The feedforward filter of the P-DFD consists of the linear MMSE filter ... proposed for data demodulation in the DS-UWB communication systems. The computational complexity of the forward path of the MMSE-DFD receiver is reduced by introducing the reduced-rank MM...

Ngày tải lên: 22/06/2014, 01:20

... the proposed detection technique. In Section 3, the detection performance with various clutters is investigated. Finally, Section 4 concludes this study. 2. Detection Technique The detection problem ... β 0 is in conflict with the noninformative prior. Therefore, the effect of α 0 and β 0 on the probability of detection P D should be investigated. Figure 5 shows the simulation res...

Ngày tải lên: 21/06/2014, 18:20

... three cases with known CSI at the fusion center have similar per- formance and are much better than the NOCSIF case. This is consistent with the symmetric case. As we stated above, for the system with ... identically distributed (i.i.d.) for the two sensors, that is, for k = 1, 2, H 0 : X k = N k , H 1 : X k = S + N k , (26) with N 1 and N 2 being i.i.d. CN (0, σ 2 1 ). Without...

Ngày tải lên: 22/06/2014, 22:20

... (5)), MSTP-MCM and ZP- OFDM performed similarly, and significantly outperformed S-OFDM and CP-OFDM. S-OFDM performed poorly due to a high level of ISI. Better S-OFDM performance was ob- served when ... Feuers ¨ anger, and K D. Kam- meyer, “Two-dimensional (recursive) channel equalization for multicarrier systems with soft impulse shaping (MCSIS),” in Proceedings of the IEEE Global Tele...

Ngày tải lên: 22/06/2014, 23:20

... magnitude reduction in BER is possible for {4, [2, 2]} systems and even more improvement is achieved for {4, [3, 3]} systems. Most importantly, for the method in [22, 23, 24], the performance gets worse if the ... considered, these meth- ods solve only the problem for multiuser multiple- input single-output (MISO) scenario. OSDM techniques for mul- tiuser MIMO systems are re...

Ngày tải lên: 22/06/2014, 23:20

... have an estimate of detection performance be- tween object and nonobject subimages y, the prelabelled M2VTS database was employed to evaluate performance for eye and mouth detection. In training ... space. ThesameGMMtopologieswerefoundtobeeffective for both mouth and e ye detection. In all cases, classifiers were trained using images from shot 1 of the M2VTS database with testing bein...

Ngày tải lên: 23/06/2014, 01:20

... obtained in the vehi- cle-treated rats. Patients Forty-four patients with a diagnosis of relapsing/remitting Multiple Sclerosis provided urine samples for this study (Table 1). Healthy controls were ... tissue damage in all organ systems including the nerv- ous system [5-7]. These enzymes are responsible for the production of arachidonic acid and lysophospholipids and therefore also...

Ngày tải lên: 19/06/2014, 22:20