báo cáo hóa học:" Research Article Random Bit Flipping and EXIT Charts for Nonuniform Binary Sources and Joint Source-Channel Turbo Systems" docx

... pages doi:10.1155/2009/354107 Research Article Random Bit Flipping and EXIT Charts for Nonuniform Binary Sources and Joint Source-Channel Turbo Systems Xavier Jaspar 1 and Luc Vandendorpe 2 1 Laborelec, Rodestraat ... the original EXIT charts to nonuniform bits. The second one uses a random bit flipping to make the bits virtually uniform and has tw...

Ngày tải lên: 21/06/2014, 20:20

... intensive. Therefore, the SAME is effective enough for the high-volume real-time data in AdmireRPS. 6. Conclusions and Future Work In this paper, a security scheme for RPS system is designed and implemented, ... records and playbacks media data, ControlServer [2] which works as the GateKeeper (GK) and ControlUnit (CU) of H.323 system, and AdmireDB which saves the session and ac...

Ngày tải lên: 21/06/2014, 11:20

... Thailand Research Fund and the Commission on Higher Education under Grant no. MRG5180034. Moreover, the authors would like to thank Professor Somyot Plubiteng for providing valuable suggestions, and ... 3.61 and hence  y − u n i , u n i − x n i r n i  ≥ F  y, u n i  . 3.62 Since u n i − x n i /r n i → 0andu n i w,it follows by A4 that Fy, w ≤ 0 for all y ∈ H. For...

Ngày tải lên: 21/06/2014, 20:20

... uplink payload data, and feedback information.) (3) The bandwidth B has to be partitioned into a bandwidth B DL for the downlink band, and into a bandwidth B UL for the uplink band. Furthermore, ... additional bandwidth resources, e.g., for channel estimation, synchroniza- tion, traffic control channels, and guard bands. The total “usable” bandwidth is the bandwidth which the system...

Ngày tải lên: 21/06/2014, 22:20

... A −1 0. Proof. We first show that C n and Q n are closed and convex for each n ≥ 0. From the definition of C n and Q n , it is obvious that C n is closed and Q n is closed and convex for each n ≥ 0. Next, we ... closed,ifx n → x and Tx n → y, then Tx  y. We need the following lemmas for the proof of our main results. Lemma 2.1 Kamimura and Takahashi 13. Let E be a unifo...

Ngày tải lên: 22/06/2014, 11:20

... network encode and transmit their first n samples of the random field. Let Ψ be a random variable which accounts for QEDT latency, namely Ψ = max k=1, ,N τ k , (64) where τ k stands for the latency ... Simulations and Numerical Results Figure 5 depicts the (pertimeslot) distortion in the recon- structed random field for both the QEDC and QEDT encoding strategies and different...

Ngày tải lên: 21/06/2014, 17:20

... (spatially) random video segment 768 ×566 1/4 4Zoom + in (spatiotemporally) random frame segment 1536 ×1132 1/16 Table 2: Average bandwidth consumption for each access scenario and for distinct ... that we assume binary and symmetric.) Typically, LSBs usually have a higher BER than MSBs. For this reason, bits of distinct bit- planes of a precinct are interleaved before parity...

Ngày tải lên: 21/06/2014, 20:20

... (34) it is necessary to get the bit energy distribution before computing the BER. Figure 2 gives the histogram of the bit energy for the PWL spreading sequence and for a spreading factor β equalto10.ThehistogramofFigure ... periodic, broadband, and difficult to predict and to reconstruct. These are properties which coincide with requirements for signal used in communication syst...

Ngày tải lên: 21/06/2014, 20:20

... Kbit/s 3 Kbit/s 0–5.5kHz 6Kbit/s 5.5–11 kHz 11–16.5kHz 16.5–22 kHz RPE-8 RPE-2 +EP RPE-2 10 Kbit/s 12 Kbit/s RPE-2 13 Kbit/s 14 Kbit/s RPE-2 +EP 5Kbit/s RPE-8 Layer 1: 24 Kbit/s Layer 2: 38 Kbit/s Layer ... stereo audio bit rates of 28 and 42 Kbit/s) and to 8 Kbit/s for the last three layers (stereo audio bit rates of 63, 73, and 86 Kbit/s). This choice of different PS bit rates...

Ngày tải lên: 22/06/2014, 19:20

... various engineering, biological, and economical systems, and they may cause instability and poor performance of practical systems. Therefore, the stability analysis for neural networks with time-delay ... Science Foundation of Shandong Province Y2008A29, ZR2010AL016,andthe Science and Technology Programs of Shandong Province 2008GG30009008. References 1 L. O. Chua and L. Yan...

Ngày tải lên: 21/06/2014, 05:20