Báo cáo hóa học: " Blind Adaptive Channel Equalization with Performance Analysis" pot

... Mecklenbr ¨ auker A new adaptive multiple-shift correlation (MSC)-based blind channel equalizer (BCE) for multiple FIR channels is proposed. The performance of the MSC-based BCE under channel order mismatches ... detect the channel order with high detection probability. 5.2. Adaptive processing To investigate the PACE algorithm of using (20), we consider an array with p = 6...

Ngày tải lên: 22/06/2014, 23:20

... an ideal channel. provide performance gain in fractional delay compensation compared to FIR struc tures with similar complexity. 5.2. Performance comparisons with channel coding 5.2.1. Channel ... bank with 2M = 128 subchannels can be considered. For 4-PAM and 8-PAM, 2M = 256 subchannels are required to keep the performance benefit with respect to the OFDM reference. 5.3....

Ngày tải lên: 22/06/2014, 23:20

... model. The channel autocorrelation and Doppler spectrum for f D = 31 Hz of 2 ×2 MIMO channels are shown in Figure 13. Here, the channel autocorrelation was estimated by averaging over the four channels ... system performance partially using the HIPERLAN/2 standard [26]. Based on the measured channel data, in this paper, we examined some channel properties such as antenna pattern, re...

Ngày tải lên: 21/06/2014, 18:20

... communication channels that pass data from one port to another according to some messaging scheme. The use of channels to mediate communication implies that blocks interact only with the channels ... in development, can aid in capturing requirements, improving functional performance and expectations [6]. In this work, we explore the performance of the two memory architectures introduced...

Ngày tải lên: 21/06/2014, 18:20

... interference. The standardised IEEE 802.15.3a channel model is applied, and the estimated error performance is compared through simulation with the performance of both time-hopped time-reversed ... entails the collection of channel distorted energy, with increased receiver complexity. A RAKE structure is common in UWB communications in order to offset channel effects, with a bra...

Ngày tải lên: 22/06/2014, 19:20

... curve of delay (2) (curve with circular symbols). In addition, the curves associated with the maxi- mum transmission rate provided by the standard (line with crosses) and with the estimated processing ... variable (variable value); (2) 43 milliseconds, with fixed value; 43 milliseconds, with variable value; (3) 61 milliseconds, with fixed value; 86 milliseconds, with variable va...

Ngày tải lên: 22/06/2014, 22:20

... variance NCLE Channel estimation Estimated CIR length Figure 7: Structure of an OFDM system with adaptive guard interval (illust ration in baseband). 5. STRUCTURE OF AN OFDM SYSTEM WITH ADAPTIVE GUARD ... the system performance is demonstrated in Figure 15, whereas the channel estimator with the CIR length information obtained by the NLCE out- performs the conventional one. Mo...

Ngày tải lên: 22/06/2014, 22:20

... the transmission channel, mainly due to multipath propagation. To achieve reliable communications, channel equalization is necessary to deal with ISI. Conventional nonblind equalization algorithms ... τ) Algorithm 7: Adaptive two-step equalization procedure. MIMO blind identification methods. Thus, the performance of our MIMO equalization algorithms depends, in part, on the...

Ngày tải lên: 22/06/2014, 23:20

... DJ: Improvement measurement quality and efficiency with adaptive testing. Applied Psychological Measurement 1982, 6:473-492. 23. Weiss DJ: Adaptive testing by computer. Journal of Consulting ... traditional non- adaptive assessing appraisals. With the networking and rapidly growing mobile point of care development in hos- pitals, IRT-based assessing appraisal is more in line with...

Ngày tải lên: 18/06/2014, 18:20

... an adaptive control architecture that integrates continuous-time control with intermittent control and performance e valuation and can operate in two conditi ons: with or without vision, i.e. with ... combines continuity within trials with adaptive modification across trials and across sessions. We suggest that this is crucial for allowing the proposed system to be effective wi...

Ngày tải lên: 19/06/2014, 08:20