báo cáo hóa học:" Editorial Multiuser MIMO Transmission with Limited Feedback, Cooperation, and Coordination" ppt

... quantization with low complexity. The article entitled Limited feedback multiuser MIMO techniques for time-correlated channels” by E. Zacarias et al. studies limited feedback for single-user and multiuser MIMO ... single-user (SU) and multiuser (MU) MIMO transmissions is quite different. In particular, MU- MIMO suffers from residual interuser interference due to imperfect...

Ngày tải lên: 21/06/2014, 20:20

... For SDMA with random scheduling, a random set of users is scheduled and their beamformers are columns of a random orthonormal basis. Note that with single-scheduled users, SDMA with random scheduling ... Article Uplink SDMA with Limited Feedback: Throughput Scaling Kaibin Huang, Robert W. Heath Jr., and Jeffrey G. Andrews Wireless Networking and Communications Group, Depar tme...

Ngày tải lên: 22/06/2014, 19:20

... group by A. S. Tan et al. deals with the 3D video transmission, and discusses the prob- lem of “rate-distortion optimization for stereoscopic video streaming with unequal error protection.” The ... the problem of expensive and time-consuming generation of time-varying mesh sequences is addressed. The second group of three next papers is related to issues on coding and transmission...

Ngày tải lên: 21/06/2014, 22:20

... multiple-output (MIMO) transmit/receive schemes and orthogonal f requency-division multiplexing (OFDM) are used in broadband multihop ad hoc networks. A new transceiver architecture with MIMO- OFDM and MAC scheme ... inter- ference and facilitate information transmission by co- operation. In response to the demand for novel ideas and results, this special issue presents a sample...

Ngày tải lên: 22/06/2014, 22:20

... whitening Timing offset MIMO, without noise whitening, rectangular pulse Timing aligned MIMO, ML receiver, BPSK Timing offset MIMO, with noise whitening, BPSK, rectangular pulse Timing offset MIMO, with windowed ... 14,wepresent the results of a 3 × 3MIMOsystemwithoffset transmission with MMSE joint detection receivers. In this case, there are two offsets, and they have been set to T...

Ngày tải lên: 21/06/2014, 05:20

... pages doi:10.1155/2009/528675 Editorial Cross-Layer Design for the Physical, MAC, and Link Layer in Wireless Systems Petar Popovski, 1, 2 Mary Ann Ingram, 3 Christian B. Peel, 4 Shinsuke Hara, 5 and Stavros Toumpis 6 1 Department ... protocol design and reveals to the public innovative mechanisms and analysis tools. We have grouped the manuscripts into four subtopics: (1) reporting/...

Ngày tải lên: 21/06/2014, 22:20

... in simulations and provides an evaluation of the 3 -transmission schemes: MC-CDMA, OQAM-CDMA with real symbols transmis- sion, and the new proposed OQAM-CDMA with complex- symbol transmission. ... in MC-CDMA or in OQAM-CDMA real -transmission schemes, with the use of 2 W-H spread- ing codes, with a nonzero MAI term. So, the OQAM-CDMA with complex symbol transmission should...

Ngày tải lên: 22/06/2014, 19:20

... pattern (sagittal kinematics and temporal and spatial) of individuals with CFS and control subjects at their self-selected and at matched velocities. Methods: Twelve individuals with CFS and 12 matched controls ... individuals with subjects with CFS and controls. Manovas were performed on the following Table 1: Temporal and spatial parameters of gait of both the individu...

Ngày tải lên: 19/06/2014, 08:20

... iNOS expression and NO-dependent peroxynitrite release, and with glial activation near almost all diffuse and senile Aβ deposits. Conclusion: The early and focal glial activation, in conjunction with upregulated ... Emis:435-485) and a standard light and immunofluorescence micro- scope (Nikon, Eclipse E-800) connected to a digital cam- era (SONY, model DXC-9100P, Köln, Germany...

Ngày tải lên: 19/06/2014, 22:20

... contracted and using the upper and lower extremitiesFigure 1 Keeping the transversus abdominus contracted and using the upper and lower extremities. Journal of Occupational Medicine and Toxicology ... test requires the firefighter to maintain spinal column stability with upper and lower trunk motion while balancing their weight with one hand and knee on the floor. The maneu...

Ngày tải lên: 20/06/2014, 00:20