Báo cáo hóa học: "Approaching the MIMO Capacity with a Low-Rate Feedback Channel in V-BLAST" docx

... per-antenna rate adaptationusing a low-rate feedback channel. Using a low-rate feedback channel, [13] introduced rateadaptation at each antenna in V-BLAST to overcome thisproblem. We extend their approach ... multidimensional cod-ing [1]. Hence, the same capacity can be achieved using scalarcoding, but at the expense of rate adaptation using a low-rate feedback channel. For a practical coding scheme with a nonzero ... antenna. Both SQPCand SRPQ show an average total rate close to the closed-loop MIMO capacity if a capacity- approaching scalar code is used perantenna.Keywords and phrases: adaptive antennas,...

báo cáo hóa học: " Severe depression is associated with increased microglial quinolinic acid in subregions of the anterior cingulate gyrus: Evidence for an immune-modulated glutamatergic neurotransmission?" doc

... andAMM analyzed the data and interpreted the results. RB was involved in the creation of figures. JS, MW, TG, ZS, BB and AMM wrote the manuscript. Allauthors have read and approved the final ... 71:138-149.43. Akhondzadeh S, Tabatabaee M, Amini H, Ahmadi Abhari SA, Abbasi SH,Behnam B: Celecoxib as adjunctive therapy in schizophrenia: a double-blind, randomized and placebo-controlled trial. Schizophr ... S,Kammerer WA, Quezado Z, Luckenbaugh DA, Salvadore G, Machado-Vieira R, Manji HK, Zarate CA Jr: A randomized add-on trial of an N-methyl-D-aspartate antagonist in treatment-resistant bipolar depression.Arch...

báo cáo hóa học:" Examining the dimensions and correlates of workplace stress among Australian veterinarians" docx

... purposes)veterinarians when the data was analysed as a group. Thiswas somewhat of an interesting finding because quality ofleadership and collaboration with co-workers has beenpreviously demonstrated as ... appears that stressremains fairly common among Australian veterinarians,and one that occupies several distinct areas within theirprofessional life. From a methodological perspective, the internal ... Aus-tralian veterinarians. Aust Vet J 2008, 86(4):114-116.18. Meehan MP, Bradley L: Identifying and evaluating job stresswithin the Australian small animal veterinary profession.Aust Vet Practit...

báo cáo hóa học:" eJIAS: The Journal of HIV/AIDS Science and Medicine in the Developing World" docx

... expanding globalHIV/AIDS care initiatives.Authors and DisclosuresMark A. Wainberg, PhD, has disclosed that he has receivedgrants for clinical research from GlaxoSmithKline andBristol-Myers ... Squibb.Joep M. A. Lange, MD, has disclosed that he has receivedgrants for clinical research and/or honoraria for educa-tional and/or advisory activities from Bristol-MyersSquibb, Boehringer Ingelheim, ... here:http://www.biomedcentral.com/info/publishing_adv.aspBioMedcentralJournal of the International AIDS Society 2004, 6:56 http://www.jiasociety.org/content/6/3/56Page 2 of 2(page number not for citation purposes)sharing, and education that must attend expanding...

Báo cáo hóa học: " On the maximum modulus of a polynomial and its polar derivative" potx

... Rather, NA: A refinement of a theorem of Paul Turan concerning polynomials. Math Ineq Appl. 1, 231–238(1998)7. Jain, VK: Generalization of an inequality involving maximum moduli of a polynomial and ... possible and equality attains for p(z)=(z -1)n with a ≥ 1.As an extension to the inequality (1.7), Jain [7] proved that if p(z) has all zeros in |z|≤ 1, then for all a 1, a tÎ ℂ with |a 1| ... possible and equality holding for a polynomial that has all zeros at the origin.If we restrict to the class of polynomials which have all zeros in |z| ≤ 1, then it hasbeen proved by Turan [2] thatmax|z|=1p(z)≥n2max|z|=1p(z).(1:2)The...

báo cáo hóa học: " On the pinned field image binarization for signature generation in image ownership verification method" pot

... domain.By using the average value of the pinned field as a threshold value, the pinned field is transformed into a binary feature image. Then, the binary feature image i scombined with a scrambled ... embedded domain of watermarks, digi-tal watermarking techniques can be classified into twocategories: the spatial and frequency domains. Embed-ding watermarks in the spatial domain is a straightfor-ward ... the random noise andcompression operations.3. The pinned field image is determined in the spatialdomain rather than being determined in the frequencydomain. Instead of taking account of all...

báo cáo hóa học: " On the Lambert-W function for constrained resource allocation in cooperative networks" docx

... of the instantaneous channel realizations. Ergodic capacity isused to characterize the transmission rate of the channel. We assume the channel has unit bandwidth. Wefurther assume an average ... allocation, where the MR only performs a rough resource allocation with limited information (the average channel gain of all outgoing links at MCor the statistical channel information) and the ... the SNR gap related to the required bit-error-rate (BER). The main reason that t he MR determines an approxi-mated rate instead of the exact rate is that the MRknows only the average channel gain¯Gk,...

Báo cáo hóa học: " Research Article MIMO Systems with Intentional Timing Offset" pptx

... keepingmaximum spatial multiplexing gain. In MIMO systems, unlike in single-antenna systems, the multiple transmitters interfere with each other at each receiveantenna resulting in IAI. In the ... the IA I.To summarize, the contributions of this paper are the following: we demonstrate the practical gains that may beachieved in a single carrier MIMO system by intentionallyintroducing a ... oﬀset. As shown in [8], this ensures that the data rateacross all the systems i s the same. We emphasize, however,that normalizing the data rate does not imply that all the 8 EURASIP Journal on Advances...

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

... on the channel as well as the spatial structure of the interference,and methods for feeding back such information are proposedand analyzed. In the second half of the paper, a partial feedback ... median range of users are available, only insigniﬁcantperformance degradation is observed with respect to the optimum in simulations with an ideal channel model orbased on measurement data. The ... S.Venkatesan et al. establishes the performance that can beachieved in indoor networks using network MIMO, or basestation coordination. They quantify the gains in spectraleﬃciency under realistic...

Báo cáo hóa học: " Research Article Secrecy Capacity of a Class of Broadcast Channels with an Eavesdropper" potx

... degraded broadcastchannels.As mentioned earlier, since the class of parallel mul-tireceiver wiretap channels with a less noisiness order in each subchannel contains the class of parallel degradedmultireceiver ... model, we again have a parallel multireceiverwiretap channel with two subchannels, two users, and oneeavesdropper, and the degradation order in each subchannelis exactly the same as in the previous ... message secrecy capacity. We ﬁnd the sum secrecy capacity for this class, which is again a generalization of the corresponding result in [8] to a broader class of channels.(3) We also investigate...

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