Báo cáo hóa học: " Research Article Bit Error Rate Approximation of MIMO-OFDM Systems with Carrier Frequency Offset and Channel Estimation Errors" ppt

... Communications and Networking Volume 2010, Article ID 176083, 14 pages doi:10.1155/2010/176083 Research Article Bit Error Rate Approximation of MIMO-OFDM Systems with Carrier Frequency Offset and Channel Estimation ... properly cited. The bit error rate (BER) of multiple-input multiple-output (MIMO) orthogonal frequency- division multiplexing (OFDM...

Ngày tải lên: 21/06/2014, 11:20

... W m,p -Solutions of Degenerate Elliptic Equations We start with an abstract regularity result which is useful for the existence problem of W m,p Ω-solutions of degenerate quasilinear elliptic equations of ... Natural Science Foundation of China no. 10971148. 8 Boundary Value Problems We denote by X 2 the completion of X under the norm · 2 and by X 1 the completion of X...

Ngày tải lên: 21/06/2014, 11:20

... Note that the variance of channel estimation error is finite for finite |t i | 2 and σ 2 w i . The actual channel can be represented as a sum of the estimate and the estimation error, that is, h i =  h i + ... illustrate the achieved distortion when we have (i) perfect knowledge of the CSI, that is, {δ 2 i } N i = δ 2 = 0 and (ii) the estimates of the channels with...

Ngày tải lên: 21/06/2014, 17:20

... performance gain with respect to α and n. G is seen to increase with increase in values of n and decreases with increase in value of α, the overlap factor. Note that increase in number of readers n with ... send a common query of bits and await responses over a frame of time slots. In each round, the query bits of all readers are the same. All tags are read after a t...

Ngày tải lên: 21/06/2014, 11:20

... two types of transmission errors, namely random bit errors due to noise in the channels and packet losses due to network congestion. When transmitting a data packet, a single uncorrected bit error ... latest channel loss rate. We therefore propose to send an estimate average channel packet loss rate based on packet loss rates of the previous k frames. It gives a better esti...

Ngày tải lên: 21/06/2014, 20:20

... in DMT-based systems. The purpose of this paper is twofold. First, we introduce the bit rate maximising criterion of PTEQ. The PTEQ which attains this bit rate maximising capability is called a bit rate maximising ... optimal solution of the truly bit rate maximising time-domain equalisation (BM-TEQ) cost function. It is based on an exact formulation of the subchanne...

Ngày tải lên: 21/06/2014, 20:20

... Diarization Using the BHT-Soft Belief Function. To facilitate for the synchronization of multi-modal data, that is, the video frame rate of 25 fps, and the speech sampling rate of 44100 Hz, we consider ... has video frame rate of 30 fps and is manually annotated. Speaker diarization performance is usually evaluated in terms of diarization error rate (DER), which is ess...

Ngày tải lên: 21/06/2014, 05:20

... requirements of the slowest standards and only with high degrees of parallelism (and so with increased power consumption). For this reason, this paper develops an accurate fixed- point model of a decoder ... universal, multistandard decoder of channel codes, capable of supporting the two classes of codes and having reduced requirements in terms of silicon area and po...

Ngày tải lên: 21/06/2014, 05:20

... properties of random transition probability for second-order Markov chains indexed by a tree. In this paper, we study a class of Shannon-McMillan random approximation theorems for arbitrary random ... type of measures of the deviation between the arbitrary random fields and the Markov chain fields on the generalized Bethe tree. 2. Main Results Theorem 2.1. Let X  {X t ,t∈ T} be an...

Ngày tải lên: 21/06/2014, 05:20

... with zero mean and variance σ 2 f and σ 2 g , respectively. Furthermore, the variance of the AWGN is assumed normalized with zero mean and unit variance, and the channel power of the selected ... scheme. The source has an infinite number of messages for each destination, and each message is transmitted with a rate R bits per channel use (BPCU) and considered to be...

Ngày tải lên: 21/06/2014, 05:20