FPGA Realizations of Walsh Transforms for Different Transform and Word lengths into Xilinx and Altera Chips

This paper presents FPGA realizations of Walsh transforms. The realizations are targetted for the system of arbitrary waveform generation, addition/ subtraction, multiplication, and processing of several signals based on Walsh transforms which is defined in term products of Rademacher functions. Input signals are passing through the system in serial, the output either signals or coefficients are also passing out in serial. To minimize the area utilization when the systems are realized in FPGA chips, the word lengths of every processing step have been designed carefully. Based on this, FPGA realizations of those various applications into Xilinx and Altera chips have been done. In Xilinx realizations, Xilinx ISE was used to display the results and to extract some critical parameters such as speed and static power. Meanwhile, the realizations into Altera chips have been conducted using Quartus. Comparisons of speed and power among Xilinx and Altera chip realizations are presented here even though this is not an apple to apple comparison. Finally, it can be concluded that Walsh transforms can be realized not only for the applications that have been done here, but it is potential can be used for other applications

FPGA Hardware Realization: Addition of Two Digital Signals Based on Walsh Transforms

This paper presents hardware realization of addition of two digital signals based on Walsh transforms and inverse Walsh transforms targeted to the Xilinx FPGA Spartan 3 board. The realization utilizes Walsh Transform to convert the input data to frequency domain and the inverse Walsh transform to reconvert the data from frequency domain. The designed system is capable of performing addition, subtraction, multiplication and Arbitrary Waveform Generation (AWG). However, in the present work, the hardware realization of addition only has been demonstrated. The Clock frequency for realization into the board is supplied by an external function generator. Output results are captured using a logic analyzer. Input data to the board (system) is passed manually through the available slide switches on-board

Design of Real Time Walsh Transform for Processing of Multiple Digital Signals

This paper presents the design and implementation of multiple digital signals processing using real-time Walsh transforms. The design of real time Walsh transform is done in such a way that it starts producing outputs instantly even before all input data have entered the system. The system consists of Walsh Transform circuit, several Digital Signal Processing (DSP) circuits, and an inverse Walsh transform circuit. The real time Walsh and inverse Walsh transforms are also designed to produce right results for any possible combinations of input data. DSP blocks are able to perform addition, subtraction, and dyadic convolution process of Walsh coefficients of more than one digital signals. Comparisons to the previous methods are briefly presented. It was found that the design of real time Walsh transform structure has better performance than many of the previously reported results in the literature.DOI:http://dx.doi.org/10.11591/ijece.v3i2.196

Evaluasi Rangka Beton Bertulang dengan Dinding Geser Menggunakan Fema 310 (Studi Kasus pada : Gedung Menara Dang Merdu Bank Riau)

The earthquake is a natural disaster that is very difficult to predict the time and location of occurrence. A relatively short process very inversely proportional to the impact. Planning for building must be considered for anticipated damage that will occur as a result of an earthquake. This study aims to conduct a thorough evaluation of the performance of the structure of the Building Dang Merdu Tower of Bank Riau against earthquake hazards by using the FEMA 310 document. The evaluation was conducted on the evaluation of the first phase of the checklist method FEMA 310, the second phase of evaluation with linear static methods and evaluation of the third phase of the method static nonlinear (pushover). Based on FEMA checklist Building Dang Merdu Tower of Bank Riau does not meet the requirements at the soft story investigation. Stiffness of the first level of less than 70% on the stiffness of the second level. Based on a linear static analysis for equivalent static earthquake load story drift value does not meet the requirements story drift permit SNI 1726-2012 while the earthquake response spectrum meet the requirements. Based on the pushover analysis level of the performance Building Dang Merdu Tower of Bank Riau is O (Operational) on ATC-40

Pengaruh Penambahan Limbah Sisa Penyaringan Minyak Kelapa Sawit sebagai Bahan Tambah terhadap Kuat Tekan dan Kuat Lentur Beton

The research aims to obtain the characteristic of concrete using Spent Bleaching Earth (SBE) as substitute material on normal concrete. It is focused on compressive strength, setting time, and flexure strength. The percentage of SBE it used are 0%, 2%, and 4% of the cement weight. The result show SBE is not suitable to be a cement replacement because it show the decrease of compressive and flexure strength. But the setting time on SBE is slower than 0% SBE substitution and need more time to harden than normal concrete

Pengaruh Ph dan Konsentrasi Tmcs pada Sintesis Aerogel Silika dari Water Glass

Telah dilakukan sintesis aerogel silika pada tekanan ambien menggunakan water glass melalui proses sol-gel. Gel disiapkan dengan menambahkan tetes demi tetes natrium silikat ke dalam 5 mL HNO3 hingga pH 3 dan 6. Konsentrasi TMCS yang digunakan adalah 33% dan 6 %. Hidrogel dicuci menggunakan air bebas ion kemudian dikeringkan untuk mengurangi kandungan H2O. Alkogel didapatkan dengan merendam hidrogel dalam metanol selama 24 jam. Sililasi dilakukan pada alkogel menggunakan campuran heksana, TMCS, dan metanol selama 24 jam. Tahap sililasi diakhiri dengan merendam gel dalam heksana selama 12 jam kemudian dikeringkan pada suhu 50 oC selama 24 jam, 80 oC selama 10 jam, dan 120 oC selama dua jam. Tahap pertukaran pelarut dilakukan pada suhu 50 oC. Karakterisasi dilakukan melalui pengamatan secara visual, uji hidrofobisitas dan sudut kontak secara kualitatif, massa jenis, serta spektrofotometri FT-IR. Hasil aerogel silika pada pH 3 dan 6 menggunakan TMCS 33% memiliki massa jenis 0,164 g/mL dan 0,060 g/mL sedangkan menggunakan TMCS 6% aerogel masih bersifat hidrofilik

Walking Walking Tour Organizer: an Indonesian Travel Agent Goes International

Walking Walking Tour Organizer is tour service located in Malang, East Java, Indonesia. So far Walking Wlaking Tour Organizer mostly serve consumer in Malang. Walking Walking Tour Organizer have commitment want to be a company could be worldwide.Asian country should be very good for target market because most of the total of tourist visiting Indonesia is from Asian country