Báo cáo hóa học: "Research Article Low-Complexity Estimation of CFO and Frequency Independent I/Q Mismatch for OFDM Systems" pdf

... technique of [26] O(n r u k ) Proposed phase estimation technique O(n r u k n iter ) Classical CFO estimation technique O(N) NLLS algorithm for CFO estimation O(Nn iter ) Proposed CFO estimation ... take the example of phase offset estimation and discuss the results and parameters of Figure 5. In this figure, the MSE curves of the HDD and the algorithm of (34)w...

Ngày tải lên: 21/06/2014, 08:20

... trajectories of the volatility is reported in Figure 3.Themeanvalueand the standard deviation of its relative error of estimation are about 1% and 5%, respectively. This shows that the standard deviation ... values of the volatility. In the simulation of Figure 4, they are 0.15, 0.05, and 0.01, respectively. Both the true volatility and its estimate for a periodic sampling...

Ngày tải lên: 21/06/2014, 22:20

... preamble 12symbols SIGNAL One OFDM symbol Data Variable number of OFDM symbols Coded OFDM (BPSK, r = 1/2) Coded OFDM (rate is indicated in SIGNAL) 16 μs (11a) 32 μs (11p) 4 μs (11a) 8 μs (11p) (Number of OFDM symbol) ×4 ... ratio, and total power of lth tap path. 4. PROPOSED INTELLIGENT CHANNEL AND FREQUENCY OFFSET ESTIMATION SCHEMES The channel estimation is an impo...

Ngày tải lên: 21/06/2014, 23:20

... Kwon, and S. R. Lee, Low-complexity estimation of 2D DOA for coherently distributed sources,” Signal Processing, vol. 83, no. 8, pp. 1789–1802, 2003. [5] G. Y. Zhang and T. Bin, Estimation of ... using (11 )and( 12). The MP algorithm for 2D DOA estimation only used the phase information of the signal. It can be inferred that the angular spread can be got from the module in...

Ngày tải lên: 22/06/2014, 01:20

... pattern and the array phase center as unknowns during the coupling estimation. We obtain a robust and ver- satile joint method for estimation of the coupling matrix, the element factor, and the ... 758–763, 1998. [13] M. Mowl ´ er and B. Lindmark, Estimation of coupling, ele- ment factor, and phase center of antenna arrays,” in Proceed- ings of IEEE Antennas and Prop...

Ngày tải lên: 22/06/2014, 19:20

... Therefore, channel estimation in KSP -OFDM is in general more complex than for CP -OFDM and ZP -OFDM. APPENDIX A. DETERMINATION OF J 1 (21) Taking into account (18 )and( 19), the derivative of ln p(r 1 | h)withrespecttoh(k)isgivenby dlnp(r 1 | ... independent of the transmitted data, the ML channel estimate and associate true CRB for CP- OFDM and ZP -OFDM are easily...

Ngày tải lên: 22/06/2014, 19:20

... application of ACO -OFDM using SCFDE modulation instead of OFDM. The former requires FFT and IFFT at the transmitter and receiver but has lower PAPR than ACO -OFDM and better BER performance. RCO-SCFDE and ... input of the LED is formed. For ACO -OFDM, the computational complexity is mainly due to the 4N-point FFT at the transmitter and the 4N-point IFFT at the receiver....

Ngày tải lên: 21/06/2014, 08:20

... Mappings Jingxin Zhang 1 and Yunan Cui 2 1 Department of Mathematics, Harbin Institute of Technology, Harbin 150001, China 2 Department of Mathematics, Harbin University of Science and Technology, Harbin ... condition and so the FPP for multivalued nonexpansive mappings. 2. Preliminaries Let X be a Banach space and C be a nonempty subset of X; we denote all nonempty bounde...

Ngày tải lên: 21/06/2014, 11:20

... Figure 7.The PePerformance is applied for a processing resource, MemPer- formance for a memory resource, and CommPerformance for a communication resource, respectively. The performance characteristics ... graph of actions and edges connecting them. Here, actions correspond to tasks T and edges to channels Δ. Basic activ ities allow modeling of control and data flow, but expli...

Ngày tải lên: 21/06/2014, 20:20

... [0,σ n (1)] and s ∈ [0,1]. Y. Lin and M. Pe i 15 [13] D. J. Guo and V. Lakshmikantham, Nonlinear Problems in Abstract Cones, vol. 5 of Notes and Reports in Mathematics in Science and Engineer ... λM L ·g n−p+1  σ(1),0  ≤ L, t ∈  0,σ n−p+1 (1)  . (3.21) Y. Lin and M. Pe i 13 For y ∈ K and λ ∈ R(λ ∗ ,λ 0 ), from Remark 3.2 and (A 3 ), we have that for t ∈ [0, σ n−p+1 (...

Ngày tải lên: 21/06/2014, 22:20