Báo cáo hóa học: " On the Channel Capacity of Multiantenna Systems with Nakagami Fading" pot

... capac-ity of the Nakagami fading channels. The conservativeness of the lower bound comes from the diagonal assumption on Q.If, on the other hand, Q is nondiagonal, some kind of knowl-edge, either ... viewed as the cumulative distribution function (cdf) of the conditionalShannon capacity. Notice that the last equality of the aboveequation follows from the fact that C(X; Y|A) is a continuousfunction ... phenomenon is s imilar to the cor-responding one in the case of the Rayleigh fading channels(cf. [2, Example 3]).Figure 4 shows the relationship between the lower bound of the channel capacity...

Báo cáo hóa học: " Letter to the Editor A Further Result about “On the Channel Capacity of Multiantenna Systems with Nakagami Fading”" potx

... Kaiser [1]derivedvariousexpressions for the channel capacity of multiantenna sys-tems with the Nakagami fading channel. Most of these areexpressed in terms of the integralJ(k, β)=∞0log1+uβuk/2−1exp(−u)du,(1)see, ... for the channel capacity of multiantenna systems with the Nakagami fading channel. Copyright © 2007 S. Nadarajah and S. Kotz. This is an open access article distributed under the Creative Commons ... CorporationEURASIP Journal on Advances in Signal ProcessingVolume 2007, Article ID 84713, 2 pagesdoi:10.1155/2007/84713Letter to the EditorA Further Result about On the Channel Capacity of Multiantenna...

Báo cáo hóa học: " On the super-stability of exponential Hilbert-valued functional equations" pot

... 46E40.Keywords: exponential functions, stability, Hilbert-valued function1. Introduction The stability problem of functional equations goes back to a question of Ulam [1] con-cerning the stability of group ... be exponential with the convolution product.Authors’ contributionsAll authors carried out the proof. All authors conceived of the study, and participated in its design and coordination.All ... An: ℝ ® ℝ is an additive functionand anis a function satisfying (1). The continuation of proof depend on the dimension of H. In fact, if H is infinite dimensional, since(en⊗ F)(x)=F(...

Báo cáo hóa học: " On general filtering problem of stationary processes with fixed transformation" pot

... thispaper. Based on this, we propose a general filtering problem of stationary proce sses with fixed transformation. Finally, on a stationary processes with no any additionalconditions, we get the spectral ... 2011:68http://www.journalofinequalitiesandapplications.com/content/2011/1/68Page 10 of 10RESEARC H Open Access On general filtering problem of stationaryprocesses with fixed transformationLong suo LiCorrespondence:lilongsuo6982@126.comDepartment ... transformation, fillering1. Introduction The Prediction theory is an important part of stationary processes, also linear filterproblems is an important part of Prediction theory. The linear...

báo cáo hóa học: " On the achievable rates of multiple antenna broadcast channels with feedback-link capacity constraint" doc

... that the norm information of the channel vectors is not conveyed to the BS.Lower bound on the achievable rate of ZF-DPC with DFUnder the assumption that the feedback channel is errorfree, the ... f(x)=exEn(x)(n ≥ 1) is a monotonicallydecreasing function. The proofs of these three lemmas are in Appendices4-6, respectively. Then we have the following theorem on the lower bound of the achievable ... is the exponential integral function of orderj. The closed-form express ion of the expectation inEquation 23 follows from the results in [31].Thus, we have completed the proof.Upper bound on...

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

... thatmkn<|an|.3. Proof of the theoremProof of Theorem 1.1.Letm =min|z|=k|p(z)|. If p( z)hasazeroon|z|=k,thenm =0 and the result follows from Lemma 2.8. Henceforth, we suppose that all the zeros of p(z) ... k.But this result contradicts the fact that |a1|>k. Hence, the polynomialDα1p(z)mustbe of degree (n - 1). On the other hand, since all the zeros of p(z) lie in |z| ≤ k, therefore by applyingLemma ... all zero s on |z|=1.Let Dap(z) denote the polar differentiation of the polyno mial p(z)ofdegreen with respect to a Î ℂ.Then,Dap(z)=np(z)+(a - z) p’ (z). The polynomial Dap (z)isofdegree...

báo cáo hóa học: " On the solvability conditions of the first boundary value problem for a system of elliptic equations that strongly degenerate at a point" pdf

... ≡0because of the continuity of the function˜qn1j on (0, R). In such a case, the elements of the second row of matrix˜Qnsatisfy the equationln(˜qn2j)=0. For the samereason as a ... s.(30) The termsrRn|m|≤na(k)nmHmn(ω) of the series on the right-hand side of (29) are harmonic functions in ∑R. Since theseseries converge uniformly on the sphere SR, they ... type problem in the class of smooth functions are given andsufficient conditions on the existence and uniqueness of the solutions are obtained.Keywords: systems of elliptic equations, degenerate...

Báo cáo hóa học: " On the EVM computation of arbitrary clipped multi-carrier signals" docx

... constellation with energyEr= b2rfor 1 ≤ r ≤ NB.• NQgroups of QAM symbols. The symbols of e achgroup, of size Ns, are drawn from a constellation of size Ms, with constellation coefficients ... drawn from the set of BPSK, QAM orzero constellation points with an average constellationenergy of Eι,1 ≤ ι ≤ p. That is, groups of symbols aredistinguished by the constellation type and ... demonstrates the EVM versusclipping level for the mixture of 128 B PSK modulatedtones with constellation energy bo osted by 3 d B, 128QPSK modulated tones and 256 16QAM modulatedtones (the...

Báo cáo hóa học: " On the Chemical Origin of the Gap Bowing in (GaAs)12xGe2x Alloys: A Combined DFT–QSGW Stud" pptx

... energetics of any alloy with equal numbers of Ge cations and anions as function of the number of badbonds can be developed.Our QSGW calculations conﬁrm the bowing of the alloyboth at the C and ... as input the critical concentration at which the transition takes place,but no restrictions on the formation of Ga–Ga and As–Asbonds are imposed. Other models based on the percolationmethod ... descriptors of the ZB—diamond phase transi-tion than thermodynamic ones: the latter do not take intoaccount the nonuniqueness of the critical composition xcasa function of kinetic growth; they...

Báo cáo hóa học: " On the Geometrical Characteristics of Three-Dimensional Wireless Ad Hoc Networks and Their Applications" pptx

... our theoretical results have a good matching with that of the simulation.4. NETWORK CAPACITY As mentioned above, the max-flow capacity is another im-portant parameter on the performance of network. ... in the infinite two-dimensional region,based on the inverse power law model of attenuation with lognormal shadowing fading, Orriss and Barton [6]provedthat the number of audible stations of ... makes the number of disconnected node pairs increasesharply and hence the mean value of the max-flow capacity decreases. The quantified and more exact depiction of the phenomenon requires further...

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