Báo cáo hóa học: " Adaptive Subchip Multipath Resolving for Wireless Location Systems" pot

... 10.1155/ASP/2006/25431 Adaptive Subchip Multipath Resolving for Wireless Location Systems Nabil R. Yousef, 1, 2 Ali H. Sayed, 1 and Nima Khajehnouri 1 1 Electrical Engineering Departme nt, University of California, ... overlapping multipath resolving methods (adaptive and nonadaptive), and shows how the adaptive solution can be made robust to the above limitations by extr...

Ngày tải lên: 22/06/2014, 23:20

... increased bitrate. Therefore, an adaptive STS-based transmission scheme is then proposed for improving the throughput of W-CDMA systems. Our numerical results demonstrate that this adaptive STS-based ... multimedia source codec [8]. The in- teractions and performance benefits of cross-layer-optimised third-generation wireless systems employing adaptive beam- forming were quantified in...

Ngày tải lên: 23/06/2014, 00:20

... i DD N Single-hop delay for N = 2, and multi-hops delay for N >2 ΔD N Single-hop delay jitter for N = 2, and multi-hops delay jitter for N >2 ee N Single-hop effective bandwidth for N = 2, and multi-hops effective ... Workshop on Performance Control in Wireless Sensor Networks (PWSN’06), (Coimbra, Portugal, May 2006), pp. 6–13 14. JB Schmitt, FA Zdarsky, L Thiele, A comprehe...

Ngày tải lên: 21/06/2014, 00:20

... 2011:32 http://jwcn.eurasipjournals.com/content/2011/1/32 Page 4 of 11 outperform Leith-Clifford and Gibbs, especially for moderately connected topologies. Performance of Leith- Clifford deteriorates compared with the gradient-based algorithms ... that Leith-Clifford and Gibbs significantly underperform the rest, for example, at interference radius equal to 0.5852. For this radius, 100...

Ngày tải lên: 21/06/2014, 02:20

... sequence c of span n and period L,foragivenshiftτ ,theknown results are as follows: θ c (τ )= ⎧ ⎨ ⎩ 2 n for τ =0, 0for1 ≤|τ |≤n − 1 , = 0for| τ | = n (6) Further, for n ≥ 3, θ c (2 n-1 ) is a multiple ... sidelobes (i.e., for   Figure 3 Welch bound curves for different families of spreading codes. The curves corresponding to Kasami sequences are interpolated for the values of n...

Ngày tải lên: 21/06/2014, 03:20

... results Monte Carlo simulations are performed for a wireless system with multiple antennas to evaluate the perfor- mance of the proposed selection criterion. For the sake of simplicity, we consider ... 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...

Ngày tải lên: 21/06/2014, 03:20

... signal reconstructions for different tasks cannot be performed until all measurements are collected. Note that this technical assumption is only for deriving the algorithm for information exchange. ... TBCS outperforms the original BCS and MBCS algorithms at each iteration for different similarity levels. We also choose IEEE802.15a [26] UWB echo signals for performance simulation. Fo...

Ngày tải lên: 21/06/2014, 05:20

... scenarios Random No Reallocation One Edge No Reallocation Two Edges No Reallocation Random Reallocation One Edge Reallocation Two Edges Reallocation Figure 7: Performance of the radio resource reallocation ... graph. Therefore, the resource allocation for these topologies is identical. In other words, the resource allocation in overlap- ping MBS Zones is to deal with the coloring problem f...

Ngày tải lên: 21/06/2014, 05:20

... function if fx, y is measurable as a function of x for each fixed y and continuous as a function of y for a.a. almost all x ∈ J. We list for convenience the following assumptions. H1 u 0 ,v 0 ∈ ... dense in M, for any x ∈ M there exists a subsequence {x i j } of {x i } such that x i j → x j →∞.By2.6 and Definition 1.2,weget x ≤ x ∗ , ∀x ∈ M. 2.7 Hence x ≤ Ax ≤ Ax ∗ , therefo...

Ngày tải lên: 21/06/2014, 20:20

... Rayleigh fading for each path. The system parameters are N t = M = 100 for all cases; for PAM-16, K = 16, N r = 13; for PAM-8, K = 6, N r = 6; for PAM-4, K = 8 with N r = 9, and for PAM-2, K = ... (i) for higher-order modulations we group B data streams together which will form a 2 B -ary PAM sym- bol. This is done as follows: the antenna sequence partitions s k,m for the data...

Ngày tải lên: 21/06/2014, 22:20