Novel FIR-Filter Configuration Tolerant to Fast Phase Fluctuations in Digital Coherent Receivers for Higher-Order QAM Signals

2012 ◽  
Author(s):  
Yojiro MORI ◽  
Chao ZHANG ◽  
Kazuro KIKUCHI
Keyword(s):  
Fir Filter ◽  
Higher Order ◽  
Phase Fluctuations ◽  
Fast Phase ◽  
Coherent Receivers ◽  
Filter Configuration

scholarly journals Higher Order Low Pass FIR Filter Design using IPSO Algorithm

2019 ◽  
Vol Volume-3 (Issue-3) ◽  
pp. 518-520
Author(s):  
M. Santhanaraj ◽  
Rishikesh. S. S ◽  
Subramanian. A. N | Vijai Sooriya. Su ◽  
Keyword(s):  
Filter Design ◽  
Fir Filter ◽  
Higher Order ◽  
Low Pass ◽  
Fir Filter Design ◽  
Ipso Algorithm

AREA REDUCTION TECHNIQUES FOR PARALLEL FIR FILTER WITH SYMMETRIC COEFFICIENTS.

2015 ◽  
pp. 218-222
Author(s):  
SITHARA KRISHNAN
Keyword(s):  
Impulse Response ◽  
Finite Impulse Response ◽  
Fir Filter ◽  
Higher Order ◽  
Hardware Complexity ◽  
Silicon Area ◽  
Area Reduction ◽  
Reduction Techniques ◽  
Filter Structure ◽  
Ripple Carry Adder

The objective of the paper is to reduce the hardware complexity of higher order FIR filter with symmetric coefficients. The aim is to design efficient Fast Finite-Impulse Response (FIR) Algorithms (FFAs) for parallel FIR filter structure with the constraint that the filter tap must be a multiple of 2. The parallel FIR filter structure based on proposed FFA technique has been implemented based on carry save and ripple carry adder for further optimization. The reduction in silicon area complexity is achieved by eliminating the bulky multiplier with an adder namely ripple carry and carry save adder. For example, for a 6-parallel 1024-tap filter, the proposed structure saves 14 multipliers at the expense of 10 adders, whereas for a six-parallel 512-tap filter, the proposed structure saves 108 multipliers at the expense of 10 adders. Overall, the proposed parallel FIR structures can lead to significant hardware savings for symmetric coefficients from the existing FFA parallel FIR filter, especially when the length of the filter is very large.

scholarly journals Digital filters windowing for data transmission enhancement in communication channel

2021 ◽  
Vol 24 (3) ◽  
pp. 1454
Author(s):  
Ola N. Kadhim ◽  
Kifah T. Khudhair ◽  
Fallah H. Najjar ◽  
Hassan M. Al-Jawahry
Keyword(s):  
Data Transmission ◽  
Filter Design ◽  
Finite Impulse Response ◽  
Data Communication ◽  
Digital Transmission ◽  
Fir Filter ◽  
Power Spectral ◽  
Data Signal ◽  
Fir Filter Design ◽  
Filter Configuration

In this search, an important methodology has been presented for communicated information rectification utilizing advanced channel windowing approach. The modern data communication technologies are ensured with numerous challenges because of their unpredictability and arrangement. Various digital transmission topologies in 4G can't fulfill the requirements in future arrangements, therefore, alternative multicarrier modulation (MCM) becoming the nominated approaches among all other data transmission techniques. Wherein prototype filter configuration is a fundamental system based on which the synthesis and analysis filters are derived. This paper presents a complete review on the ongoing advances of finite impulse response (FIR) filter plan procedures in MCM based correspondence frameworks. Initially, the essential issues are tried, taking into consideration the presentation of available data signal applicants and the FIR filter design concept. At that point the techniques for FIR filter configuration are summed up in subtleties and are center around the accompanying three group’s recurrence testing strategies, windowing based strategies and advancement-based techniques. At last, the exhibitions of different FIR structure strategies are assessed and measured by power spectral density (PSD) and bit error rate (BER), and variable MCM plots as well as their potential prototype filters are examined.

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