Báo cáo hóa học: " Research Article Carrier Frequency Offset Estimation for Multiuser MIMO OFDM Uplink Using CAZAC Sequences: Performance and Sequence Optimization" ppt

... Communications and 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 ... conducted to evaluate the performance of the CFO estimation using CAZAC sequences. We first compare the performance using CAZAC seq...

Ngày tải lên: 21/06/2014, 05:20

... pages doi:10.1155/2007/45364 Research Article Carrier Frequency Offset Estimation and I/Q Imbalance Compensation for OFDM Systems Feng Yan, Wei-Ping Zhu, and M. Omair Ahmad Centre for Sig nal Processing and Communications, ... (BER performance of OFDM systems using the proposed algorithms). In this experiment, we would like to show the bit-error rate (BER) of an...

Ngày tải lên: 22/06/2014, 20:20

... Based on (12 )and( 15), the optimum L value depends on M, N, ρ and K.Fora system with specific number of Tx and Rx antennas, L can be evaluated for different values of ρ and K beforehand and stored ... Tulino and S. Verdu, Random Matrix Theory and Wireless Communications, Now Publishers, Hanover, USA. [32] M. Abramowitz and I. A. Stegun, Handbook of Mathematical Functions with F...

Ngày tải lên: 21/06/2014, 17:20

... transmit precoder and receive filter can result in improved performance. Transceiver designs that jointly optimize precoder/receive filters for multiuser MIMO downlink with different performance criteria ... Processing Volume 2009, Article ID 473930, 13 pages doi:10.1155/2009/473930 Research Article Robust THP Transceiver Designs for Multiuser MIMO Downlink with Imper fect...

Ngày tải lên: 21/06/2014, 20:20

... line, r min and r max are the minimum and maximum distance from the scene to the flight line, and R c is the distance between the scene center and the synthetic aperture center. The platform moves ... k e is the chirp rate, and c is the speed of light. T p and T spot are the pulse width and the synthetic aperture time, respectively, t a,start and t a,end are the start and the...

Ngày tải lên: 21/06/2014, 22:20

... (MAC) and Physical Layer (PHY) specifica- tions Amendment: Enhancements for Higher Throughput, 2009. [2] IEEE 802.11e WG, IEEE Standard for Information Tech- nology—Telecommunications and Information ... November 2006. [19] IEEE 802.11g WG, International Standard for Information Technology—Telecommunications and Information Exchange between systems-Local and metropolitan area net...

Ngày tải lên: 21/06/2014, 05:20

... 2010, Article ID 575817, 8 pages doi:10.1155/2010/575817 Research Article Point Spread Function Estimation for a Terahertz Imaging System Dan C. Popescu and Andrew D. Hellicar Wireless and Networking ... c and p or p in terms of c and i from (2). The straightforward way is to take the Fourier transform on both sides, which maps convolution into multiplication, and then find...

Ngày tải lên: 21/06/2014, 08:20

... groups: Amplify -and- Forward (AF) [3, 4, 8, 10–13], Compress -and- Forward (CF) [5, 20], and Decode -and -For- ward (DF) [1–3, 6, 7, 9, 15]. In the AF schemes, relays amplify (and maybe transform [4]) the ... Wireless Communications and Networking Volume 2010, Article ID 764784, 13 pages doi:10.1155/2010/764784 Research Article Effects of Channel Estimation on Multiuser Vir...

Ngày tải lên: 21/06/2014, 11:20

... “LR-based MMSE- SIC + PVC -MIMO + PVS”) has a negligible performance gap from the ML performance (i.e., TSD-CR) with CSI estimation errors. 6. Conclusion For underdetermined MIMO systems where a lower-order modulation ... “LR-based MMSE + PVC -MIMO + PVS,” and “LR-based MMSE-SIC + PVC -MIMO + PVS”) by using flops, for the case of N = 2 and N = 3, respectively. Since the co...

Ngày tải lên: 21/06/2014, 11:20

... different transmit powers at the source and at the relay, not only for the same carrier but also for different carriers. For a relayed carrier, assuming a decode- and- forward mode, the rate is the minimum ... selection detection -and- forward (SDF) mode or in the amplify -and- forward (AF) mode. The authors target the minimization of the transmit- power for a desired throughput...

Ngày tải lên: 21/06/2014, 22:20