FFT Design for OFDM-based Cognitive Radio Using a Reconfigurable Baseband Processing Architecture

被引：0

作者：

Lu, Wenqing ^{[1
]}

Sobelman, Gerald E. ^{[2
]}

Zhou, Xiaofang ^{[1
]}

Ren, Junyan ^{[1
]}

机构：

[1] Fudan Univ, State Key Lab ASIC & Syst, Shanghai 201203, Peoples R China

[2] Univ Minnesota, ECE Dept, Minneapolis, MN 55455 USA

来源：

2013 IEEE 10TH INTERNATIONAL CONFERENCE ON ASIC (ASICON) | 2013年

关键词：

DFT;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Cognitive Radio (CR) has been proposed to address the apparent paradox between spectrum scarcity and spectrum underutilization. It requires the use of a reconfigurable architecture to support a wide range of operating modes. In the case of OFDM-based CR, several subcarriers could interfere with licensed (i.e., the primary) users, so there may be a large number of zero-valued input/output points of the IFFT/FFT and the standard FFT algorithms are not efficient in such a situation. In this paper, we discuss how a more appropriate FFT algorithm, transform decomposition, can be mapped onto a reconfigurable baseband processing architecture. Two mapping methods are proposed to meet various user requirements.

引用

页数：4

共 12 条

[1] A REARRANGED DFT ALGORITHM REQUIRING N2/6 MULTIPLICATIONS [J].

BONCELET, CG .

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1986, 34 (06) :1658-1659

[2]

Goertzel G., 1958, Amer. Math. Monthly, V65, P34, DOI DOI 10.2307/2310304

[3] Cognitive radio: Brain-empowered wireless communications [J].

Haykin, S .

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2005, 23 (02) :201-220

[4] Adaptive modulation techniques for duplex OFDM transmission [J].

Keller, T ;

Hanzo, L .

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2000, 49 (05) :1893-1906

[5] Reconfigurable baseband processing architecture for communication [J].

Lu, W. Q. ;

Zhao, S. ;

Zhou, X. F. ;

Ren, J. Y. ;

Sobelman, G. E. .

IET COMPUTERS AND DIGITAL TECHNIQUES, 2011, 5 (01) :63-72

[6] OFDM FOR COGNITIVE RADIO: MERITS AND CHALLENGES [J].

Mahmoud, Hisham A. ;

Yuecek, Tevfik ;

Arslan, Hueseyin .

IEEE WIRELESS COMMUNICATIONS, 2009, 16 (02) :6-14

[7] FFT PRUNING [J].

MARKEL, JD .

IEEE TRANSACTIONS ON AUDIO AND ELECTROACOUSTICS, 1971, AU19 (04) :305-&

[8]

Poston JD, 2005, 2005 1ST IEEE INTERNATIONAL SYMPOSIUM ON NEW FRONTIERS IN DYNAMIC SPECTRUM ACCESS NETWORKS, CONFERENCE RECORD, P607

[9] PRUNING DECIMATION IN-TIME FFT ALGORITHM [J].

SKINNER, DP .

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1976, 24 (02) :193-194

[10] EFFICIENT COMPUTATION OF THE DFT WITH ONLY A SUBSET OF INPUT OR OUTPUT POINTS [J].

SORENSEN, HV ;

BURRUS, CS .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1993, 41 (03) :1184-1200

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