Báo cáo hóa học: " Energy-Efficient Channel Estimation in MIMO Systems" pot

... different channel estimation schemes obtained by varying the number of active transmit/receive antennas under a fixed delay and error constraint. 2. CHANNEL ESTIMATION IN MIMO FLAT-FADING ENVIRONMENTS ... electrical and computer engineering in 1988, and the Ph.D. degree in electrical and computer engineering in 1991, both from Northeastern University, Boston, Mass. In 1992,...

Ngày tải lên: 22/06/2014, 22:20

... computations in the encrypted domain, and a packing approach to group a number of pixels together in a single encrypted word for faster computation. Detailed bounds on accuracy and packing efficiency ... membership of an incomer but is oblivious to which entry the incomer’s biometric matches. The authors describe an interactive protocol for iris matching in the encrypted domain. They also...

Ngày tải lên: 21/06/2014, 18:20

... center of much interest for a long time in connection with a problem of reactor dynamics (Levin and Nohel [11]). The Liapunov function here, having its root in the work of Levin [10], continues to ... T is invertible. By Cramer’s rule, we write k j in (3.13)ask j = j (a)/ where  j (a)isthen × n determinant obtained by replacing the jth column of  by a = (a 1 ,a 2 , ,a n ) T defined...

Ngày tải lên: 22/06/2014, 22:20

... Communications and Networking 5 0 5 10 15 20 25 30 10 0 10 −1 10 −2 10 −3 10 −4 10 −5 SNR (dB) MSE Randon training Orthogonal training Orthogonal optimal training Zadoff-Chu optimal training Figure 1: MSE ... 25 30 10 0 10 −1 10 −2 10 −3 SNR (dB) SER Exact channel Randon training Orthogonal training Orthogonal optimal training Zadoff-Chu optimal training 14.5 15 15.5 10 −1.3 10 −1.2 Figure 2:...

Ngày tải lên: 21/06/2014, 17:20

... 3 in Section 4). In semi-blind approaches (such as that in [5]), there is periodically inserted time-multiplexed training but one uses the nontraining- based data also to improve the training-based ... eng ineering from Ts- inghua University, Beijing, China, in 2000 and 2003, respectively. He is currently working towards his Ph.D. degree in electri- cal engineering at Auburn Univers...

Ngày tải lên: 22/06/2014, 23:20

... University, Beijing, China, in 1998 and 2000, respectively, and the Ph.D. de- grees in electrical engineering from Prince- ton University, Princeton, NJ, in 2005. In 2005, he joined Qualcomm, San ... performance loss incurred by the fluctuations of received power in the fading channels and consider only the impact of channel estimation error. 2.2. Channel estimation error In...

Ngày tải lên: 23/06/2014, 00:20

... 2003 and in re vised form 9 June 2003 Time-domain equalization is crucial in reducing channel state dimension in maximum likelihood sequence estimation and inter- carrier and intersymbol interference ... K. Martin obtained dual B.S. de- grees in physics and electrical engineering from the University of Maryland, College Park in 1999 (Summa Cum Laude) and an M.S. in electrical...

Ngày tải lên: 23/06/2014, 01:20

... contin- uous phase modulated signals in fading channels. In the re- mainder of this section, we propose three different EM-based channel estimation and signal detection algorithms by defin- ing ... the method with MMSE in the frequency domain [8] and linear interpolation (LI) in the time do- main [7] (MMSE + LI) as an example, since MMSE esti- mation in the frequency domain demons...

Ngày tải lên: 23/06/2014, 01:20

... γ 2 ≥···≥γ N c . In other words, while maintaining a given sum rate, minimum total power is used if the subcarriers are ordered according to their link gains (best link gain first) and the SINR targets ... assigned, such that the same throughput is maintained; however, it is interesting to obtain an assignment which minimizes the total power. The problem of minimizing the total power for a g...

Ngày tải lên: 22/06/2014, 00:20

... keep large estimation windows to perform estimation in (7): us- ing the whole burst allows obtaining the minimum degra- dation. Clearly, this approach requires “accurate” single-user frequency estimations, ... 3 y K [n] Initial phase recovery Decoding Estimation of g K,. Interference cancellation  d (m) k [n] To b eam l,fork interfering on beam l y k [n] Initial phase recovery y (m)...

Ngày tải lên: 22/06/2014, 19:20