Báo cáo hóa học: " FPGA-Based Communications Receivers for Smart Antenna Array Embedded Systems" pptx

... enhance the performance and reduce the power consumption for Altera -FPGA-based embedded wireless receivers. We found that smart antenna array receiver algo- rithms, for example, beamforming (BF) ... Systems Volume 2006, Article ID 81309, Pages 1–13 DOI 10.1155/ES/2006/81309 FPGA-Based Communications Receivers for Smart Antenna Array Embedded Systems Constantin S...

Ngày tải lên: 22/06/2014, 22:20

... constraints of embedded systems pose a serious challenge to embedded systems designers. Reconfigurable hardware can provide a flexible and efficient platform for satisfying the area, performance, cost, ... instruction generation for non-real-time systems are discussed in more depth in Section 6.2. 4.4. Design security High-quality hardware cores for embedded systems are ex- tremely us...

Ngày tải lên: 22/06/2014, 22:20

... distributed freely for any purposes (see copyright notice below). For information about publishing your research in EURASIP WCN go to http://jwcn.eurasipjournals.com/authors/instructions/ For information ... η for 2 and 4 relay networks, respectively. The simulation is performed for different channel realizations considering the transmitted SNR (TSNR) is set to 12 dB. It can be...

Ngày tải lên: 21/06/2014, 23:20

... (Eq. (3) for global MJD, Eq. (18) for IA, Eqs. (27) and (31) for RDMA, Eq. (34) for CI) and nor- malizing by the number of BS antennas. □ Lemma 3.2. The following inequalities apply for the dofs ... and (20) for IA, (c) Eq. (26) for RDMA, (d) Eq. (35),(36) for CI. In parallel, the analytical curves are evaluated based on: (a) theorem 3.1 for global MJD, (b) theorems 3.2 and...

Ngày tải lên: 20/06/2014, 22:20

... 5-6 dB. The curve for a QPSK system with the conventional receiver is also provided for a baseline com- parison. Note that for the conventional receiver, th e BER performance for an OQPSK system ... Conv. 16QAM Conv. 16ASK Impr. Figure 5 BER performance for the uplink of OFDMA system (K = n R = 2) for the conventional FDE and the improved FDE for systems with high-order signal c...

Ngày tải lên: 20/06/2014, 22:20

... INTRODUCTION Discrete Fourier transform (DFT-) based modulation tech- niques [1] have become increasingly popular for high-speed communications systems. In the wireless context, for exam- ple, for the digital transmission ... of 16 Ph.D. candidates and postdocs, working in the area of signal processing for digital communications, wireless communications, DSL, and audio signal proc...

Ngày tải lên: 22/06/2014, 23:20

... methods for embedded systems are biologically inspired, such as neural networks and genetic algorithms. Multiagent systems are also prospective for an application for nontime critical services of embedded ... be accurately localized. An Embedded Software Platform for Distributed Automotive Environment Management. Vehicle platforms become more and more extended by features for...

Ngày tải lên: 21/06/2014, 20:20

... λ i ( F ) + λ j−i+m ( G ) , for i ≥ j, (14) λ j ( F + G ) ≥ λ i ( F ) + λ j−i+1 ( G ) , for i ≤ j. (15) Proof. See [14, page 62] or [12, page 184]. To a pp l y Theorem 6 for estimating eigenvalues ... and [d j+1 /d m ,1],respectively .For ∈ [0,d j−1 /d m ], we have  d j + t = d j−1 + f 2 (ρ)and  d j+1 = d j .For ∈ [d j−1 /d m , d j /d m ], we have  d j + t = f 4 (ρ)and  d j+1 = d j...

Ngày tải lên: 21/06/2014, 20:20

... general pattern as those for the phase. As noted for SDD phase recovery, the frequency MCRB bound [31] is attained for E b /N 0 ≥ 6 dB, and negligible performance degr adation is observed both for the frequency ... iteration, whereas for both receivers the matched filtering is carried out only once before applying the decoding and synchronization pro- cedures. Our complexity evalua...

Ngày tải lên: 23/06/2014, 00:20

... sim- ulations for the PTEQ/PTEC receiver structure. As a perfor- mance measure for the simulations, we will use the SNR i for tone i and the overall bit rate, according to the following for- mulas: bit ... (dB) Far-end before DFT Echo before DFT NoisebeforeDFT Far-end after DFT Echo after DFT Noise after DFT Figure 2: Power spectral densities of received far-end signal, echo, and exte...

Ngày tải lên: 23/06/2014, 01:20