Multi-Code Multi-Carrier CDMA Modulation with Adaptive Bit-Loading for VDSL Modems(<Special Section>Digital Signal Processing)

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概要

• 論文の詳細を見る

• This paper presents a new modulation scheme for Very-High Speed Digital Subscriber Lines (VDSL) modem, featuring a Multi-Code Multi-Carrier Code Division Multiple Access (MC^2-CDMA) modulation. The system takes advantage from both the CDMA modulation and the Multi-Carrier transmission, and furthermore the channel throughput is increased adopting a multi-code approach. Starting from an overview of this novel scheme, encompassing the transmitter, channel and receiver description, a brief review of the equalization techniques is also considered and a proper bit-loading algorithm is derived to find out the achievable overall channel rate. The aim of this paper, besides introducing this novel scheme, is to demonstrate its suitability for a VDSL environment, where the achievable channel rate represents a real challenge. By means of a further optimisation, a general improvement of the system performance with respect to the standardized Discrete Multi Tone (DMT) modulation is also demonstrated.

• 社団法人電子情報通信学会の論文
• 2003-08-01

著者

• Fanucci Luca

  C. S. Metodi E Dispositivi Per Radiotransmissioni National Research Council

• ROVINI Massimo

  Department of Information Engineering of the University of Pisa

• VANINI Giovanni

  Department of Information Engineering, University "Politecnico di Milano,"

• Vanini Giovanni

  Department Of Information Engineering University "politecnico Di Milano

関連論文

• High-Throughput Multi-Rate Decoding of Structured Low-Density Parity-Check Codes(VLSI Architecture, VLSI Design and CAD Algorithms)
• A Low-Complexity and High-Resolution Algorithm for the Magnitude Approximation of Complex Numbers(VLSI Design Technology and CAD)
• Multi-Code Multi-Carrier CDMA Modulation with Adaptive Bit-Loading for VDSL Modems(Digital Signal Processing)

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