Báo cáo hóa học: " Vector perturbation based adaptive distributed precoding scheme with limited feedback for CoMP systems" docx

... on, vector perturbation based adaptive precoding schemes are designed by perturbing the precoding/ beamforming vectors [4-7,9,11-15]. A method for applying overlaid perturbation vectors for gradient -feedback ... 2011:8 http://jwcn.eurasipjournals.com/content/2011/1/8 Page 2 of 8 RESEARCH Open Access Vector perturbation based adaptive distributed precoding schem...

Ngày tải lên: 21/06/2014, 03:20

... Mbps. Therefore, there is not enough bandwidth for all sta- tions. The r esults in the lower part of t he figure with our scheme confirm that our scheme can ameliorate the fairness performance ... the wireless router for storing and forwarding the pack- ets into queues. To reduce loads on the access router, we Table 1 Comparison of related work and our WLAN-ATC scheme Scheme Layer...

Ngày tải lên: 20/06/2014, 22:20

... 'keep up' with the speed a modifications will be made by the therapists. Consent Written informed consent was obtained from the patients for publication of this case report and accompanying images. ... unpredictable perturbations during treadmill walking providing valuable perturbation, which allows training compensatory postural responses during walking which thus hypothesiz...

Ngày tải lên: 19/06/2014, 08:20

... used for matrices (column vectors); [ ·] i,j ([·] i ) for the i, jth (ith) en- try of a matrix (vector) ; [ ·] i,: ([·] :,j ) for the ith (jth) row (column) of a matrix; [ ·] i:j will denote a vector ... search in (5) is performed over the set of constellation codewords x with size |A s | KN . Note that this is a general detector for performance analysis purposes but its complexit...

Ngày tải lên: 22/06/2014, 19:20

... the CE per- formance. The improvement of the system performance is demonstrated in Figure 15, whereas the channel estimator with the CIR length information obtained by the NLCE out- performs the ... nanoseconds. 6.2. Comparison of the proposed technique with Larsson’s method In [3], Larsson et al. proposed a method for estimating the CIR length based on the generalized Akaike informat...

Ngày tải lên: 22/06/2014, 22:20

... Power assist method for HAL-3 using EMG -based feedback controller. Proc of Int Conf Systems, Man and Cybernetics 2003:1648-1653. 2. Kenyon RV, Leigh J, Keshner EA: Considerations for the future development ... regulation to incoming sensory and physical stimuli. Based on the results, they propose an appropriate evaluation process for handling biosignals with different time-scale...

Ngày tải lên: 19/06/2014, 10:20

... optimization techniques. Even lower complexity can be achieved using a least squares -based formulation, but simulation results indicated a substan- tial performance loss compared with the SQP approach. The ... eight is set to 1 with- out any loss of performance, so a search for choosing the best one is performed over the (M - 1) remaining places. The complexity increases exponentially...

Ngày tải lên: 21/06/2014, 01:20

... improve the BER performance at the cost of increased complexity.FDBD with QRM-MLD significantly reduces the complexity compared to the MLD. However, the computational complexity of FDBD with QRM-MLD ... using M = 256. 3.2. Complexity. The computational complexities of FDBD with QRM-MLD required for TA-SC and CP-SC are dis- cussed. The complexity here is defined as the number of complex...

Ngày tải lên: 21/06/2014, 08:20

... x n  n∈ω with x n ∈ Tx n−1  and qx n ,x n1  ≤ ϕqx n−1 ,x n ,foralln ∈ . Therefore q  x n ,x n1  ≤ ϕ n  q  x 0 ,x 1   , 3.4 for all n ∈ . Now, choose ε>0. Let δ  δε ∈ 0,ε for ... quasi-metric completeness in terms of formal balls,” Mathematical Structures in Computer Science, vol. 20, no. 3, pp. 453–472, 2010. 20 M. Schellekens, “The Smyth completion: a comm...

Ngày tải lên: 21/06/2014, 17:20

... method based on Kruzhkov’s technique of doubling variables in 12 and prove uniqueness and a comparison principle of renormalized solution for problem P. Boundary Value Problems 3 As usual, for ... Carath ´ eodory functions with 1 ≤ i, j ≤ N. We assume that a ij ·, 0 ∈ L ∞ Ω and for any given M>0 there exist d M ∈ L ∞ Ω and a positive constant λ 0 such that for every s...

Ngày tải lên: 21/06/2014, 20:20