Báo cáo hóa học: " Research Article Reduced Complexity Channel Models for IMT-Advanced Evaluation" potx

... Communications and Networking Volume 2009, Article ID 195480, 13 pages doi:10.1155/2009/195480 Research Article Reduced Complexity Channel Models for IMT-Advanced Evaluation Yu Zhang, 1 Jianhua ... there are two main challenges for the IMT-Advanced channel model. Firstly, the TDL models in [18, 19]havean invariant channel profile. (The channel profile” stands for...

Ngày tải lên: 21/06/2014, 23:20

... computed for each of the raters using the respective other raters as reference, that is, the mean of the four other raters for the LE group and the three other raters for the OC group. For the ... handicap. ASR will enable precise evaluations of speech and voice as a precondition for scientific purposes, for example, for outcome measurements. It will help to specify the influence...

Ngày tải lên: 21/06/2014, 20:20

... been performed in outdoor and indoor environments [6–10]. Moreover, channel models are available to describe the UWB propagation in these environments. In order to form physical layer standards for ... Multipath Channel Models Based on the observation that the clustering phenomenon exists for the UWB propagation inside the engine com- partment but not for that under the chassis,...

Ngày tải lên: 21/06/2014, 22:20

... the proposed channel update algorithm. 5. Channel Update The performance of MIMO systems depends on the accuracy of channel state information (CSI). In a fast varying channel, the channel estimate ... VANET, and an accurate channel model is required to study the performance of MIMO systems. Moreover, since MIMO algorithms require accurate channel state information, the issue of...

Ngày tải lên: 21/06/2014, 23:20

... “On coding for block fading channels,” IEEE Transactions on Information Theory, vol. 46, no. 1, pp. 189–205, 2000. [17] G. B. Giannakis, Z. Liu, X. Ma, and S. Zhou, Space-Time Cod- ing for Broadband ... become part of the VAA for a given transmitted packet. Most relaying techniques can be classified either as analog forwarding (AF), decode-and-forward (DF), and selective forwarding (SF)...

Ngày tải lên: 22/06/2014, 19:20

... Specifically, for the sequence City up to 1 dB can be gained for Rayleigh fading channel at 7 dB, while up to 0.3 dB over SCTC, when low channel errors for AWGN channel are considered. RS + TC performs ... Specifically, for the sequence City up to 3 dB can be gained by SCTC when low E b /N o or high channel er- rors are considered for both AWGN channel and Rayleigh fading c...

Ngày tải lên: 22/06/2014, 19:20

... comparable error performance to the phase-only method. While for Ex1 the performance of EM is better than the others, for other examples the performance is comparable. Therefore, with the proposed ... selected to be different for amplitude and phase and for each component. In this paper they are assumed to be polynomial for both amplitude and phase and for all components. Therefore...

Ngày tải lên: 21/06/2014, 06:20

... Journal on Wireless Communications and Networking Volume 2010, Article ID 751520, 13 pages doi:10.1155/2010/751520 Research Article Low -Complexity One-Dimensional Edge Detection in Wireless Sensor ... (suboptimum) detection algorithm, with reduced computational complexity. Noisy communication links are modeled either as (i) binary symmetric channels (BSCs) or (ii) channels with add...

Ngày tải lên: 21/06/2014, 17:20

... i ) , P min ( k, i )  . (15) 4. Experimental Results For performance evaluation of the proposed method for noise PSD estimation we compare its performance with three reference methods, namely, noise ... data for which the number of noise-only Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2009, Article ID 925870, 15 pages doi:10.1155/2009/92587...

Ngày tải lên: 21/06/2014, 19:20

... 1] and random I/Q mismatch which is uniformly distributed in [0, 1] dB for gain mismatch and [0, 4 ◦ ]forphase mismatch. System performance versus SNR for coded and uncoded systems is shown in ... and Networking Volume 2009, Article ID 542187, 11 pages doi:10.1155/2009/542187 Research Article Low -Complexity Estimation of CFO and Frequency Independent I/Q Mismatch for OFDM System...

Ngày tải lên: 21/06/2014, 20:20