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- Shama Rehman, Ruh Ullah, A M Butt, N D Gohar
- Journal of hazardous materials
- 2009

In modern purification techniques employing semiconductor mediated photooxidation of toxic substances, zinc oxide (ZnO) and titanium dioxide (TiO2) are the most widely used metal oxides due to their unique blend of properties. However, the band edges of these semiconductors lie in the UV region which makes them inactive under visible light irradiation.… (More)

- Jamshaid Sarwar Malik, Jameel Nawaz Malik, Ahmed Hemani, Nasirud Din Gohar
- VLSI-SoC
- 2011

An efficient hardware implementation of Gaussian Random Number (GRN) generator based on Central Limit Theorem (CLT) is presented. CLT, although very simple to implement, is never used to generate high quality Gaussian numbers. This is due to the fact that direct implementation of CLT provides very poor accuracy in tail regions of the probability density… (More)

- Jamshaid Sarwar Malik, Jameel Nawaz Malik, Ahmed Hemani, Nasirud Din Gohar
- 2011 11th International Symposium on…
- 2011

Box Muller (BM) algorithm is extensively used for generation of high quality Gaussian Random Numbers (GRNs) in hardware. Most efficient published implementation of BM method utilizes transformation of 32-bit data path to 16 bits and use of first degree piece-wise polynomial approximation to compute logarithmic and square root functions. In this work, we… (More)

An efficient hardware implementation of Gaussian Random Number (GRN) generator based upon Box-Muller (BM) and CORDIC algorithms is presented. We will illustrate a novel hardware architecture with flexible design space that unifies the two algorithms. A major advantage of this work is that unlike any of the previously reported architectures, it is possible… (More)

- Jamshaid Sarwar Malik, Ahmed Hemani, Jameel Nawaz Malik, Ben Slimane, Nasirud Din Gohar
- IEEE Trans. VLSI Syst.
- 2015

Gaussian random numbers (GRNs) generated by central limit theorem (CLT) suffer from errors due to deviation from ideal Gaussian behavior for any finite number of additions. In this paper, we will show that it is possible to compensate the error in CLT, thereby correcting the resultant probability density function, particularly in the tail regions. We will… (More)

- Jamshaid Sarwar Malik, Ben Slimane, Ahmed Hemani, Nasirud Din Gohar
- The 10th IEEE International Symposium on Signal…
- 2010

Filter-based fading channel simulators universally use White Gaussian Noise (WGN) to generate complex tap coefficients. In this work, we will show that replacing WGN source by Uniform Random Number Generator (URNG) results in improved simulation speed in case of software simulator; and reduced area/power in case of hardware simulator. We will verify, both… (More)

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