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

Author(s):  
Ola N. Kadhim ◽  
Kifah T. Khudhair ◽  
Fallah H. Najjar ◽  
Hassan M. Al-Jawahry

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.

Finite Impulse Response (FIR) filters are the most significantdevice in digital signal processing.In many Digital Signal Processing applications like wireless communication, image and video processing FIR filters are used.Digital FIR filters primarily consists of multipliers, adders and delay elements. Area, power optimization and speed are the key design metrics of FiniteImpulse Response filter.As more electronic devices are battery operated, power consumption constraint becomes a major issue. Multipliers are the core of FIR filters. They consume a lot of energy and are generally complex circuits. With each new process technologies, the short channel effects limit the performance of FIR filters at nano regime. Various architectures have been proposed to enhance the performance of FIR filter. In this paper, FIR filter is designed using FINFETs at 22nm technology using Hspice software.


Finite Impulse Response (FIR) filters are most important element in signal processing and communication. Area and speed optimization are the essential necessities of FIR filter design. This work looks at the design of Finite Impulse Response (FIR) filters from an arithmetic perspective. Since the fundamental arithmetic operations in the convolution equations are addition and multiplication, they are the objectives of the design analysis. For multiplication, Booth encoding is utilized in order to lessen the quantity of partial products. Consequently, considering carry-propagation free addition strategies should improve the addition operation of the filter. The redundant ternary signed-digit (RTSD) number framework is utilized to speedup addition in the filter. The redundant ternary representation utilizes more bits than required to denote the single binary digit because of which most numbers have several representations. This special behavior of RTSD allows the addition along with the absence of typical carry propagation. Xilinx ISE design suite 14.5 is used for the design and validation of proposed method. From the implementation result, the proposed design of FIR filter is compared with other conventional techniques to show the better performance by means of power, area and delay.


2018 ◽  
Vol 7 (2.32) ◽  
pp. 243
Author(s):  
U Penchalaiah ◽  
Siva Kumar VG

A recent years of technology development in Signal processing application a FIR (Finite impulse response) filter design will have a highly compactable with high performance and low power in all digital signal processing application, such as audio processing, signal processing, software define radio and so on. Now a days in our environment will have more signal noises, and fluctuation due to technology development, here the Filter design is mainly configuring the priority to reduce the signal noises and fluctuation in all type of gadgets. In this project, the design contains Transpose form of high performance and high speed filter design using finite impulse response (FIR) filter with technique of pipelined inherently and supported multiple constant multiplication (MCM) in significant with saving power computation. In digital signal processing, the multiplier is a highly required thing, the example of parallel multiplier provide a high-speed and highly reliable method for multiplication, but this parallel multiplier will take large area and also power consumption. In the FIR filter design, multiplier and adders is the maximum priority will take to give the performance, but this MCM multiplier and Adders tree architecture will take large area and maximum power consumption in signal processing. So our Proposed approach of this work, will have replace the MCM multiplier to Truncated Multiplier and using the technique of Truncated based both Signed and Unsigned Operation with SQRT based Carry Select Adder (CSLA), and also replace the normal adders in FIR Filter to SQRT based Carry Select Adder (CSLA). In the proposed system of FIR Filter design results to be analysis with signed and unsigned Truncation using modified technique of HSCG-SCS based SQRT-CSLA and hence proved its more efficient than existing design, such as FIR filter for Truncation multiplier with SQRT-CSLA based Adders, FIR filter for Truncation multiplier with BEC based Adders, FIR filter for Truncation multiplier with RCA, and FIR filter for Truncation multiplier with Common Boolean logic based RCA, and finally implemented this design on VHDL with help of Xilinx FPGA-S6LX9 and shown the performance of proposed design in terms of delay, area, and power.


The Rredundant Binary (RB) systems are wellliked for the reason that of its distinctive carry broadcast free addition. Thus a specific filter called as Finite Impulse Response filter computes its yield exploitation multiply& accumulation process. At intervals the reward work, a FIR filter supported to new higher radix-256 and chemical element arithmetic is implemented. The employment of radix-256 booth secret writing cut down the amount of partial product rows in any multiplication by eight fold. Present work inputs and coefficients unit of measurement thought-about of 16-bit. Hence, entirely two partial product rows unit of quantity obtained in Redundant Binary (RB) kind for both input and constant multiplications. These two partial product rows unit of measurement added exploitation carry free element addition. The final output is converted back to Natural Binary (NB). The planned number technique for FIR filter is compared with Computation Sharing Multiplier (CSHM) implementation.


Author(s):  
Gundugonti Kishore Kumar ◽  
Balaji Narayanam

In this paper, a modified finite impulse response (FIR) filter design has been proposed for the denoising bio-electrical signals like Electrooculography(EOG). The proposed filter architecture uses modified multiplier block, which is implemented using modified Radix-[Formula: see text] arithmetic-based representation for minimizing the multiple constant multiplication and conventional ripple carry adders are replaced with [Formula: see text] compressors. This proposed architecture is implemented by using Radix-[Formula: see text]-based multiplier and [Formula: see text] compressor architectures for achieving better improvement in the critical path delay. The Radix-[Formula: see text]-based arithmetic bit recording is used in order to reduce the design complexity of the multiplication. The proposed architecture significantly reduced the delay when compared to existing and conventional architectures.


2017 ◽  
Vol 10 (13) ◽  
pp. 344
Author(s):  
Bhargav Shukla ◽  
Augusta Sophy Beulet

This paper introduces the computationally efficient, low power, high-speed partial reconfigurable finite impulse response (FIR) filter design usingmultiple constant multiplication technique (MCM). The complexity of many digital signal processing (DSP) systems is reduced by MCM operation. Forthe better performance of DSP systems, MCM operation is not sufficient. To get better results, some other operations are used with MCM. That’s why,this paper introduces a common sub-expression elimination operation of FIR filter design can be solved by decreasing the number of operators. Usingthese techniques shows the efficiency by reducing area when compared to previously used algorithms designed.


Electronics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 599 ◽  
Author(s):  
Lei Jiang ◽  
Haijian Zhang ◽  
Shuai Cheng ◽  
Hengwei Lv ◽  
Pandong Li

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.


2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Ming-Chih Chen ◽  
Hong-Yi Wu

This work presents a novel coefficient mapping method to reduce the area cost of the finite impulse response (FIR) filter design, especially for optimizing its coefficients. Being capable of reducing the area cost and improving the filter performance, the proposed mapping method consists of four steps: quantization of coefficients, import of parameters, constitution of prime coefficients with parameters, and constitution of residual coefficients with prime coefficients. Effectiveness of the proposed coefficient mapping method is verified by selecting the 48-tap filter of IS-95 code division multiple access (CDMA) standard as the benchmark. Experimental results indicate that the proposed design with canonical signed digit (CSD) coefficients can operate at 86 MHz with an area of 241,813 um2, leading to a throughput rate of 1,382 Mbps. Its ratio of throughput/area is 5,715 Kbps/um2, yielding a higher performance than that of previous designs. In summary, the proposed design reduces 5.7% of the total filter area, shortens 25.7% of the critical path delay, and improves 14.8% of the throughput/area by a value over that of the best design reported before.


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