Báo cáo hóa học: " Research Article Prefiltering-Based Interference Suppression for Time-Hopping Multiuser UWB" pdf

... weights for the second receiver. Large value of M for the pattern ratio forces us to switch off too many elements at the first receiver. 4. Theoretical Performance Prediction 4.1. Comparison of Performances. ... training data, so for greater realism we use reduced STAP with 128 adaptive degrees of freedom (i.e., N B = 2; N p = 64) for comparison of performances. The most important perfo...

Ngày tải lên: 21/06/2014, 08:20

... performance. We note that the SVMs trained with 256- dimensional raw AE data had quite poor performance, where the AUC was 0.39 and 0.31 for datasets SR1 and SR2. We also examined the performance ... discrimination performance when they are combined with other features. For dataset SR1, the best performance was obtained with those features computed with WP method only. We note that the be...

Ngày tải lên: 21/06/2014, 08:20

... iterative SIC. Given: Δ L b →m and Δ U a →m for all a, b,andm. Initialization: x (0) m (i) = 0 for m = 1, , M and for all i. Iteration: q = 1toQ For m = 1toM For b = 1tom −1  θ (q) b →m (i) = D H m [Δ L b →m x (q) b (i) ... Justin P. Coon 1 1 Telecommunication Research Laboratory (TRL), Toshiba Research Europe Limited, 32 Queen Square, Bristol BS1 4ND, UK 2 Centre for Commu...

Ngày tải lên: 21/06/2014, 09:20

... PERFORMANCE EVALUATION Radio network performance can be measured with multiple performance indicators. These can be used to measure the coverage, interference, and system performance. The performance ... slope. A measure for network interference level is also required for network layout performance analysis. In a CDMA Jarkko Itkonen et al. 5 Table 1: Selected antenna parameters for d...

Ngày tải lên: 21/06/2014, 23:20

... Communications and Networking Volume 2007, Article ID 51358, 11 pages doi:10.1155/2007/51358 Research Article Multiple-Antenna Interference Cancellation for WLAN with MAC Interference Avoidance in Open Access ... layer interference cancellation at the AP taking into account the asynchronous interference model in- ducedbytheMAClayer. Preamble (training) Information Desired sign...

Ngày tải lên: 22/06/2014, 19:20

... general form of OFDM signal format, called gen- eralized multicarrier (GMC) [5–7], is formed by performing a matrix transformation on the vector a of M data symbols before applying (1): A = Ma,(2) where ... spectrum and amplitude samples of the pilot waveform are uniform [26, 27]. A length-L Chu sequence can be obtained by c n =  e jπqn 2 /L for L even, e jπqn(n+1)/L for L odd, (13) wher...

Ngày tải lên: 22/06/2014, 19:20

... Signal Processing Volume 2009, Article ID 617298, 10 pages doi:10.1155/2009/617298 Research Article Prefiltering-Based Interference Suppression for Time-Hopping Multiuser UWB Communications over ... scheme (b) Figure 4: System performance with respect to near-far ratio (NFR) for the TR MF and LS schemes. (a) SINR performance with respect to the near-far ratio (b) BER perfor...

Ngày tải lên: 21/06/2014, 19:20

... the identity of WAAA it is associated with as Information Elements (IEs). Element IDs 7–15 and 32–255 are reserved for future use and can be used for this purpose [22]. Handover related decisions ... Networking Volume 2009, Article ID 806563, 16 pages doi:10.1155/2009/806563 Research Article Pre-Authentication Schemes for UMTS-WLAN Interworking Ali Al Shidhani and Victor C. M. Leu...

Ngày tải lên: 21/06/2014, 20:20

... Networking Volume 2011, Article ID 570680, 11 pages doi:10.1155/2011/570680 Research Ar ticle Carrier Frequency Offset Estimation for Multiuser MIMO OFDM Uplink Using CAZAC Sequences: Performance and S ... such orthogonality is destroyed and some information from user 1 will be “spilled” to the other rows of  Y 1 ,thuscausing interference to the other users. For user 1, therefore...

Ngày tải lên: 21/06/2014, 05:20

... s 1 [m 2 ] (for 2 )ors 2 [n 1 ] ⊕ s 2 [m 2 ] (for 3 ). (e.g., s 1 [3] ⊕ s 1 [5] in the above example) (4) For the remaining lost packets at D 1 and D 2 that R receives successfully but cannot perform the ... To achieve the best performance, multiuser detection (MUD) techniques, such as optimum detector, linear decorrelating detector, decision-feedback detector, and successive interfere...

Ngày tải lên: 21/06/2014, 05:20