Multi-objective optimisation technique to design digital filters for modulated multi-rate systems

Cruz–Roldán, Fernando; Heneghan, Conor; Sáez–Landete, José; Blanco–Velasco, Manuel; Amo-Lopez, P.

doi:10.1049/el:20080417

Cited by 10 publications

(22 citation statements)

References 3 publications

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“…First, we use the technique proposed in [15] to design a symmetric 513-length 2 prototype filter for generating the transmitting and the receiving filters. The parameters used for the design are the following: Number of samples at the transition band L = 7, ε ini = 1.5 · 10 −4 , δ ini pp = 1.95 · 10 −5 , and M SA ini = 88.…”

Section: Resultsmentioning

confidence: 99%

“…Next, the BER is evaluated in several scenarios, 2 This filter length allows implementations of the transmitting and the receiving filters using fast algorithms. [15]. and compared to the standard DFT-based MCM (OFDM) under the same conditions.…”

Section: Resultsmentioning

confidence: 99%

“…Note that prototype filters obtained for M -channel maximally decimated CMFBs can also be used to design 2M -channel MDFT systems [10], [11]. In this work we consider the method proposed in [15], in which the optimization problem is formulated to minimize the energy of the stopband attenuation ψ as a multi-objective problem, achieving the following inequalities 1 :…”

Section: Design and Selection Of The Prototype Filtermentioning

confidence: 99%

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MDFT filter bank multicarrier systems with multiple transmission zeros

Cruz–Roldán

Blanco–Velasco

Godino-Llorente

2011

2011 IEEE International Symposium of Circuits and Systems (ISCAS)

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In this work, the design of filter bank multicarrier (FBMC) sytems using several kinds of Modified Discrete Fourier Transform (MDFT) filter banks is considered. Our attention is focused on Nearly Perfect Reconstruction (NPR) systems since an increase of selectivity and discrimination in each subchannel filter can provide better performance than the equivalent perfect reconstruction system. A new scheme is proposed with the main novelty of embedding an MDFT FBMC system into the standardized DFT-based multicarrier modulator (MCM). The new system also inserts a cyclic prefix into each transmitted symbol to facilitate the equalization task at the receiver. Finally, in order to illustrate the properties and capabilities of the proposed system, several simulation results are presented. They show that the proposed system can improve the standard DFT-based MCM.Index Terms-Filter bank multicarrier systems, modified DFT filter bank, filter bank design, nearly perfect reconstruction.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Design and Selection Of The Prototype Filtermentioning

confidence: 99%

See 1 more Smart Citation

MDFT filter bank multicarrier systems with multiple transmission zeros

Cruz–Roldán

Blanco–Velasco

Godino-Llorente

2011

2011 IEEE International Symposium of Circuits and Systems (ISCAS)

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“…Such a demand imposes a challenge for the conventional design processes as the number of parameters to be optimized may increase drastically or even become overwhelming. On the other hand, NPR design methods such as the frequency sampling technique [17], [18] and the generalized windowing-based techniques [19] provide means to overcome this problem. In these methods, prototype filter coefficients are expressed using a closed-form representation that includes only a few adjustable design parameters.…”

Section: A Role Of Prototype Filter Design In Partial Tmuxmentioning

confidence: 99%

“…In this manner, the upper limit of the summation index can be reduced to . Now, the prototype impulse response of a -subchannel partial filter bank (assuming such that is divisible by ) can be related to that of an -subchannel full-size filter bank by rewriting the expressions in (14) and (15) in alternative forms of (17) and (18) respectively. From (17), we observe that in case of the oddlength design, the filter coefficients of the -subchannel design can be found by selecting -spaced samples from the -subchannel design and scaling by .…”

Section: A Role Of Prototype Filter Design In Partial Tmuxmentioning

confidence: 99%

Generation of Filter Bank-Based Multicarrier Waveform Using Partial Synthesis and Time Domain Interpolation

Ihalainen

Viholainen

Stitz

et al. 2010

IEEE Trans. Circuits Syst. I

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Recently, multirate filter banks have been recognized as high performance signal processing tools that could significantly enhance the efficiency and flexibility of future wireless communications. Filter bank-based multicarrier (FBMC) modulation allows increasing the spectral efficiency of high data rate transmission, both through the lack of time domain guard periods and the reduced frequency domain guard bands. Further, the inherent frequency selectivity is regarded as a vital characteristic, which enables high quality radio scene analysis, necessary for successful deployment of dynamic spectrum access in the context of cognitive radio technology. When applied to multicarrier communications, the filter banks are operated in the so-called transmultiplexer configuration where typically equal-size synthesis and analysis filter banks are utilized at the transmitter and receiver, respectively. This paper presents a new approach to generate an FBMC signal waveform. We focus on contiguous narrowband subcarrier allocation, which is often encountered in uplink transmission. Instead of using a full-size -subchannel synthesis filter bank, the proposed scheme relies on a cascade of a -subchannel synthesis bank ( ), time domain interpolation, and a user-specific frequency shift. This method allows constructing a transmitter-receiver pair using synthesis and analysis filter banks of different sizes. The presented approach is shown to provide notable computational complexity savings over a wide range of practical user bandwidth allocations, when compared to the conventional implementation consisting of equally sized filter banks. Therefore, this novel scheme provides flexible and low-complexity synthesis of spectrally well-localized FBMC uplink waveforms, which show strong potential for future broadband mobile communications.Index Terms-Cognitive radio, dynamic spectrum access, filter banks, interpolation, multicarrier, offset quadrature amplitude modulation (QAM), partial transmultiplexer.

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Prototype Filter

Jiang¹

2018

OQAM/FBMC for Future Wireless Communications

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Multi-objective optimisation technique to design digital filters for modulated multi-rate systems

Cited by 10 publications

References 3 publications

MDFT filter bank multicarrier systems with multiple transmission zeros

MDFT filter bank multicarrier systems with multiple transmission zeros

Generation of Filter Bank-Based Multicarrier Waveform Using Partial Synthesis and Time Domain Interpolation

Prototype Filter

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