Time interleaver

Bài viết "Kỹ thuật hiệu chỉnh nền trên miền số sai lệch định thời trong các bộ TIADC dựa trên xấp xỉ Taylor bậc hai" đề xuất kỹ thuật hiệu chỉnh sai lệch định thời trên miền số trong các bộ chuyển đổi tương tự - số ghép xen thời gian (TIADC - Time-Interleaved Analog-to-Digital Converter) dựa trên xấp xỉ Taylor bậc hai. Dựa vào việc phân tích tín hiệu cần sửa lỗi theo xấp xỉ Taylor bậc hai, kỹ thuật đề xuất thực hiện ước lượng sai lệch định thời bằng thuật toán bình phương trung bình cực tiểu (LMS - Least Mean Squares) nhằm tăng tốc độ tính toán và giảm tài nguyên phần cứng.

6p phocuuvan0201 02-02-2024 5 2   Download

In this chapter, the following content will be discussed: A transition system, the interleaving model, the transitions, some important points, interleaving semantics: execute one transition at a time, interleaving semantics, busy waiting, combinatorial explosion, properties of formalisms,...

63p larachdumlanat126 31-12-2020 10 1   Download

his paper presents a method for all-digital background calibration of multiple channel mismatches including offset, gain and timing mismatches in time-interleaved analog-to-digital converters (TIADCs). The average technique is used to remove offset mismatch at each channel.

11p tamynhan6 14-09-2020 15 4   Download

Variation of the impact characteristics such as maximum contact load, maximum deflection, maximum contact time, absorbed energy are depicted in the figures. The results showed that PVDF nanofibers are not a good choice for toughening epoxy and improving impact damage resistance of GFRP.

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This paper describes the main features of the DVBNGH Bit-Interleaved Coded Modulation (BICM) module. This latter is derived from a sub-set of DVB-T2 BICM components with additional features intended to first lower receiver complexity and power consumption and then to increase receiver robustness over mobile reception. Therefore, the long code block size was removed, a different range of coding rates was chosen, non-uniform constellations were adopted in order to provide shaping gain, and the principle of signal space diversity was extended to four-dimensional rotated constellations.

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This paper reviews the main technical solutions adopted by the next-generation mobile broadcasting standard DVB-NGH, the handheld evolution of the second-generation digital terrestrial TV standard DVB-T2.

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This paper describes the main features of the DVBNGH Bit-Interleaved Coded Modulation (BICM) module. This latter is derived from a sub-set of DVB-T2 BICM components with additional features intended to first lower receiver complexity and power consumption and then to increase receiver robustness over mobile reception. Therefore, the long code block size was removed, a different range of coding rates was chosen, non-uniform constellations were adopted in order to provide shaping gain, and the principle of signal space diversity was extended to four-dimensional rotated constellations.

6p son248 24-03-2020 15 1   Download

In this paper, a new Space-Time Block Coded Spatial Modulation (SM) scheme based on the Golden Code, called the In this paper, we evaluate the symbol error performance of an extended Index Modulation for Orthogonal Frequency Division Multiplexing (IM-OFDM), namely repeated index modulation-OFDM with coordinated interleaving (abbreviated as ReCI), over the Nakagami-m fading channel.

8p vimariecurie2711 30-07-2019 22 1   Download

We describe an efficient bottom-up parser that interleaves syntactic and semantic structure building. Two techniques are presented for reducing search by reducing local ambiguity: Limited leftcontext constraints are used to reduce local syntactic ambiguity, and deferred sortal-constraint application is used to reduce local semantic ambiguity. We experimentally evaluate these techniques, and show dramatic reductions in both number of chart edges and total parsing time.

7p bunmoc_1 20-04-2013 40 4   Download

Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2008, Article ID 289184, 11 pages doi:10.1155/2008/289184 Research Article Multirate Formulation for Mismatch Sensitivity Analysis of Analog-to-Digital Converters That Utilize Parallel ΣΔ-Modulators ¨ Anton Blad, H˚ kan Johansson, and Per Lowenborg a Division of Electronics Systems, Department of Electrical Engineering, Link¨ping University, Sweden o Correspondence should be addressed to Anton Blad, antonb@isy.liu.

11p dauphong18 24-02-2012 41 3   Download

Channel diversity: frequency diversity via Rake combining, time diversity via interleaving and coding, macro-diversity via soft handoff, transmit/receive antenna diversity.

34p nhq_khtn 12-03-2011 81 5   Download

Space-Time Trellis Coding versus Adaptive Modulation In [515] the encoding and decoding processes as well as the various design trade-offs of space-time block codes [7,2 18,5 were reviewed. More explicitly, various previously pro161 posed space-time block codes [218,5 161 have been discussed and their performance was investigated over perfectly interleaved, non-dispersive Rayleigh fading channels. A range of systems consisting of space-time block codes and different channel codecs were investigated.

49p goixanh 22-09-2010 76 6   Download

Additional Techniques for Capacity and Flexibility Enhancement As shown in Chapter 1, wireless channels suffer from attenuation due to the destructive addition of multipath propagation paths and interference. Severe attenuation makes it difficult for the receiver to detect the transmitted signal unless some additional, lessattenuated replica of the transmitted signal are provided. This principle is called diversity and it is the most important factor in achieving reliable communications.

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In [515] the encoding and decoding processes as well as the various design trade-offs of space-time block codes [7,2 18,5 were reviewed. More explicitly, various previously pro161 posed space-time block codes [218,5 161 have been discussed and their performance was investigated over perfectly interleaved, non-dispersive Rayleigh fading channels. A range of systems consisting of space-time block codes and different channel codecs were investigated. The performance versus estimated complexity trade-off of the different systems was investigated and compared....

49p doroxon 16-08-2010 73 5   Download