Abstract
Future wireless communication systems are facing with many challenges due to their complexity and diversification. Orthogonal frequency division multiplexing (OFDM) in 4G cannot meet the requirements in future scenarios, thus alternative multicarrier modulation (MCM) candidates for future physical layer have been extensively studied in the academic field, for example, filter bank multicarrier (FBMC), generalized frequency division multiplexing (GFDM), universal filtered multicarrier (UFMC), filtered OFDM (F-OFDM), and so forth, wherein the prototype filter design is an essential component based on which the synthesis and analysis filters are derived. This paper presents a comprehensive survey on the recent advances of finite impulse response (FIR) filter design methods in MCM based communication systems. Firstly, the fundamental aspects are examined, including the introduction of existing waveform candidates and the principle of FIR filter design. Then the methods of FIR filter design are summarized in details and we focus on the following three categories—frequency sampling methods, windowing based methods and optimization based methods. Finally, the performances of various FIR design methods are evaluated and quantified by power spectral density (PSD) and bit error rate (BER), and different MCM schemes as well as their potential prototype filters are discussed.
Highlights
The rapid increase of mobile devices and the emergence of new technologies as well as services demand more efficient wireless cellular networks [1,2,3,4]
Due to the critical role of the prototype filter played in multicarrier modulations, that is, it determines the system performance such as stopband attenuation, inter-symbol interference (ISI), inter-channel interference (ICI) and phase noise caused by high operating frequencies, various prototype filter design methods in multicarrier communication networks are summarized
It is known that cyclic-prefix orthogonal frequency division multiplexing (CP-Orthogonal frequency division multiplexing (OFDM)) as the air interface of the 4th generation (4G) communication networks is capable of avoiding ICI and ISI
Summary
The rapid increase of mobile devices and the emergence of new technologies as well as services demand more efficient wireless cellular networks [1,2,3,4]. The reviewed filter design methods are analyzed for multicarrier modulation schemes in terms of power spectral density (PSD) [81,82], bit error rate (BER) [83,84,85], spectral efficiency, latency, computational complexity, and so forth, which are important measurements to characterize the performance of modulation waveforms. We expect that this survey can provide a reference on how to select multicarrier modulation schemes and their corresponding prototype filters in future wireless communication systems.
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