Items where Author is "Sahbudin, Ratna Kalos Zakiah "

Aris, Ishak and Mohamad Yusof, Siti Munirah and Mousavi, Seyedeh Niousha and Ali, Haider Hussein and Sahbudin, Ratna Kalos Zakiah (2018) Low cost wireless EEG system for medical and non-medical applications. IEEJ Transactions on Electronics, Information and Systems, 138 (2). 90 - 93. ISSN 0385-4221; ESSN: 1348-8155

Al-Hiti, Ahmed Shakir and Latip, Rohaya and Sahbudin, Ratna Kalos Zakiah and Raja Mahmood, Raja Azlina (2018) Comparative analysis of routing protocols over WiMAX. Advanced Science Letters, 24 (2). pp. 1303-1306. ISSN 1936-6612; ESSN: 1936-7317

Abdullah, Ahmed Shakir Al-Hiti and Sahbudin, Ratna Kalos Zakiah and Hashim, Fazirulhisyam and M., Zulkiflee (2018) Design and performance analysis of routing protocols over WiMAX. ARPN Journal of Engineering and Applied Sciences, 13 (11). 3587 - 3593. ISSN 1819-6608

Ali, Azarnia and Sahbudin, Ratna Kalos Zakiah and Ahmad Anas, Siti Barirah (2017) Performance evaluation of an efficient RZ-MQAM modulation scheme in all-optical OFDM transmission systems. Journal of Fundamental and Applied Sciences, 9 (3S). 484 - 492. ISSN 1112-9867

Nasimi, Meysam and Hashim, Fazirulhisyam and Sali, Aduwati and Sahbudin, Ratna Kalos Zakiah (2017) QoE-driven cross-layer downlink scheduling for heterogeneous traffics over 4G networks. Wireless Personal Communications, 96 (3). 4755 - 4780. ISSN 0929-6212; ESSN: 1572-834X

Khudher, Shaker Mahmood and Aris, Ishak and Mailah, Nashiren Farzilah and Sahbudin, Ratna Kalos Zakiah (2017) Analysis of AC - to - DC uncontrolled converters harmonics for electric vehicles applications. Pertanika Journal of Science & Technology, 25 (spec. Feb.). pp. 283-290. ISSN 0128-7680; ESSN: 2231-8526

Alkhafaji, Mohammed K. and Sahbudin, Ratna Kalos Zakiah (2017) A review article of multi-band, multi-mode microstrip filters for RF, WLAN, WiMAX, and wireless communication by using stepped impedance resonator (SIR). Pertanika Journal of Science & Technology, 25 (1). pp. 271-282. ISSN 0128-7680; ESSN: 2231-8526

Ahmad Anas, Siti Barirah and Seyedzadeh, Saleh and Mokhtar, Makhfudzah and Sahbudin, Ratna Kalos Zakiah (2016) Variable weight Khazani-Syed code using hybrid fixed-dynamic technique for optical code division multiple access system. Optical Engineering, 55 (10). pp. 1-11. ISSN 0091-3286; ESSN: 1560-2303

Sahbudin, Ratna Kalos Zakiah and Tan, Terry Kwang Chun and Ahmad Anas, Siti Barirah and Hitam, Salasiah and Mokhtar, Makhfudzah (2015) SAC-OCDMA over hybrid FTTx free space optical communication networks. Journal of Telecommunications and Information Technology, 2 (2). pp. 52-58. ISSN 1509-4553

Taiwo, Ambali and Taiwo, Sulaiman and Sahbudin, Ratna Kalos Zakiah and Yaacob, Mohd. Hanif and Mokhtar, Makhfudzah (2014) Fiber vibration sensor multiplexing techniques for quasi-distributed sensing. Optics & Laser Technology, 64. pp. 34-40. ISSN 0030-3992; ESSN: 1879-2545

Hitam, Salasiah and Goh, Chong Loong and Sahbudin, Ratna Kalos Zakiah and Mokhtar, Makhfudzah and Ahmad Anas, Siti Barirah and Mahdi, Mohd Adzir (2014) Performance analysis in multi-channels ellipsoid structure wireless optical communications. Optik, 125 (24). pp. 7182-7185. ISSN 0030-4026; ESSN: 1618-1336

Seyedzadeh, Saleh and Mahdiraji, Ghafour Amouzad and Sahbudin, Ratna Kalos Zakiah and Abas, Ahmad Fauzi and Ahmad Anas, Siti Barirah (2014) Experimental demonstration of variable weight SAC-OCDMA system for QoS differentiation. Optical Fiber Technology, 20 (5). pp. 495-500. ISSN 1068-5200; ESSN: 1095-9912

Taiwo, Ambali and Seyedzadeh, Saleh and Taiwo, Sulaiman and Sahbudin, Ratna Kalos Zakiah and Yaacob, Mohd. Hanif and Mokhtar, Makhfudzah (2014) Performance and comparison of fiber vibration sensing using SAC-OCDMA with direct decoding techniques. Optik, 125 (17). pp. 4803-4806. ISSN 0030-4026; ESSN: 1618-1336

Kharazi, Seyed Mohammad Saleh Seyedzadeh and Sahbudin, Ratna Kalos Zakiah and Abas, Ahmad Fauzi and Ahmad Anas, Siti Barirah (2013) Fiber non-linear effects in multiple-wavelengths optical CDMA systems. IETE Technical Review, 30 (2). pp. 149-156. ISSN 0256-4602; ESSN: 0974-5971

Sahbudin, Ratna Kalos Zakiah and Kamarulzaman, Mazlin and Hitam, Salasiah and Mokhtar, Makhfudzah and Ahmad Anas, Siti Barirah (2013) Performance of SAC OCDMA-FSO communication systems. Optik, 124 (17). pp. 2868-2870. ISSN 0030-4026; ESSN: 1618-1336

Hitam, Salasiah and Suhaimi, Siti Norziela and Muhammad Noor, Ahmad Shukri and Ahmad Anas, Siti Barirah and Sahbudin, Ratna Kalos Zakiah (2012) Performance analysis on 16-channels wavelength division multiplexing in free space optical transmission under tropical regions environment. Journal of Computer Science, 8 (1). pp. 145-148. ISSN 1549-3636; ESSN: 1552-6607

Shargh, R. Sonee and Al-Mansoori, M.H. and Ahmad Anas, Siti Barirah and Sahbudin, Ratna Kalos Zakiah and Zamzuri, A.K. and Mahdi, Mohd Adzir (2011) Improvement of comb lines quality employing double-pass architecture in Brillouin-Raman laser. Laser Physics Letters, 8 (11). pp. 823-827. ISSN 1612-2011; ESSN:1612-202X

Shargh, R. Sonee and Al-Mansoori, M.H. and Ahmad Anas, Siti Barirah and Sahbudin, Ratna Kalos Zakiah and Mahdi, Mohd Adzir (2011) OSNR enhancement utilizing large effective area fiber in a multiwavelength Brillouin-Raman fiber laser. Laser Physics Letters, 8 (2). pp. 139-143. ISSN 1612-2011

Sahbudin, Ratna Kalos Zakiah and Abdullah, M.K. and Mokhtar, Makhfudzah and Hitam, Salasiah and Ahmad Anas, Siti Barirah (2011) Design and cost performance of decoding technique for hybrid subcarrier spectral amplitude coding-optical code division multiple access system. Journal of Computer Science, 7 (10). pp. 1525-1531. ISSN 1549-3636

Muhammad Amin, Ahmad Fairuz and Aris, Ishak and Abdul Halin, Izhal and Raja Abdullah, Raja Syamsul Azmir and Sahbudin, Ratna Kalos Zakiah and Abdullah, Mohamad Khazani (2011) Development of vehicle communication system using FPGA. Australian Journal of Basic and Applied Sciences, 5 (6). pp. 1026-1038. ISSN 1991-8178

Hitam, Salasiah and Tan, Kah Lin and Sahbudin, Ratna Kalos Zakiah and Mokhtar, Makhfudzah and Ahmad Anas, Siti Barirah and Sali, Aduwati (2011) Digital visual schedule and training system for centre of autistic children. Journal of Applied Sciences, 11 (5). pp. 788-796. ISSN 1812-5654; ESSN: 1812-5662

Sahbudin, Ratna Kalos Zakiah and Abdullah, M. K. and Mokhtar, Makhfudzah and Ahmad Anas, Siti Barirah and Hitam, Salasiah (2011) Performance of subcarrier-OCDMA system with complementary subtraction detection technique. World Academy of Science, Engineering and Technology, 75 (-). pp. 1422-1427. ISSN 2070-3724

Sahbudin, Ratna Kalos Zakiah and Fauzi, S. A. and Hitam, Salasiah and Mokhtar, Makhfudzah (2010) Investigation of electrical potential and electromagnetic field for overhead high voltage power lines in Malaysia. Journal of Applied Sciences, 10 (22). pp. 2862-2868. ISSN 1812-5654; ESSN: 1812-5662

Sahbudin, Ratna Kalos Zakiah and Abdullah , Mohamad Khazani and Mokhtar, Makhfudzah (2009) Performance improvement of hybrid subcarrier multiplexing optical spectrum code division multiplexing system using spectral direct decoding detection technique. Optical Fiber Technology, 15 (3). pp. 266-273. ISSN 1068-5200; ESSN: 1095-9912

Al-Galbi, Wamidh J. M. and Mokhtar, Makhfudzah and Abas, Ahmad Fauzi and Ahmad Anas, Siti Barirah and Sahbudin, Ratna Kalos Zakiah (2009) Solving the near-far problem in dynamic frequency hopping-optical code division multiple access using power control. Journal of Computer Science, 5 (6). pp. 413-418. ISSN 1549-3636; ESSN: 1552-6607

Hitam, Salasiah and Abdullah, Mohamad Khazani and Wan Adnan, Wan Azizun and Sahbudin, Ratna Kalos Zakiah (2009) Stabilization of decision threshold for BER improvement using double carrier modulation/differential detection for outdoor optical wireless communications. International Review on Computers and Software, 4 (3). pp. 301-307. ISSN 1828-6003; ESSN: 1828-6011

Sahbudin, Ratna Kalos Zakiah and Abdullah, Mohamad Khazani (2008) Performance analysis of hybrid SCM/OSCDM system using the Khazani-Syed (KS) code. WSEAS Transactions on Communications, 7 (11). pp. 1066-1074. ISSN 1109-2742; ESSN: 2224-2864

Sahbudin, Ratna Kalos Zakiah and Abdullah, Mohamad Khazani and Hitam, Salasiah and Mahdi, Mohd Adzir (2008) Cost comparison of the detection techniques for optical spectrum CDMA system. International Journal of Computer Science and Network Security, 8 (8). pp. 87-90. ISSN 1738-7906

Othman, Mohammad Lutfi and Aris, Ishak and Mariun, Norman and Sahbudin, Ratna Kalos Zakiah (2006) Knowledge-based power system protection design courseware. Journal of Applied Sciences, 6 (15). pp. 2963-2977. ISSN 1812-5654

Ahmad Anas, Siti Barirah and Sahbudin, Ratna Kalos Zakiah and Syed Ahmad Abdul Rahman, Sharifah Mumtazah and Shafie @ Musa, Siti Mariam (2017) Maze warriors. In: Nature's Yield and Wonders of Art (NYAWA)17: Light. Universiti Putra Malaysia Press, Serdang, Selangor, pp. 61-64. ISBN 9789679604269

Moghaddasi, Majid and Sahbudin, Ratna Kalos Zakiah and Mokhtar, Makhfudzah and Ahmad Anas, Siti Barirah (2016) Investigation of circulation noise effect on SAC-OCDMA system with ring topology. In: 2016 IEEE 6th International Conference on Photonics (ICP), 14-16 Mar. 2016, Kuching, Sarawak. .

Idriss, Yahaya and Sahbudin, Ratna Kalos Zakiah and Hitam, Salasiah and Ahmad Anas, Siti Barirah (2016) Performance comparison of indoor VLC system employing SAC-OCDMA technique. In: 2016 IEEE 6th International Conference on Photonics (ICP), 14-16 Mar. 2016, Kuching, Sarawak. .

Aris, Ishak and Sahbudin, Ratna Kalos Zakiah and Muhammad Amin, Ahmad Fairuz (2015) Impacts of IoT and big data to automotive industry. In: 10th Asian Control Conference (ASCC 2015), 31 May-3 June 2015, Kota Kinabalu, Sabah. .

Danjuma, Kuje and Taiwo, Ambali and Sahbudin, Ratna Kalos Zakiah and Mokhtar, Makhfudzah and Yaacob, Mohd. Hanif (2014) Performance of SAC-OCDMA codes for multipoint fiber vibration sensing. In: The 5th Int. Conference on Photonics (ICP2014), 2-4 Sept. 2014, Kuala Lumpur, Malaysia. (pp. 247-249).

Boroon, Moahammad and Hitam, Salasiah and Mahdi, Mohd Adzir and Sahbudin, Ratna Kalos Zakiah and Seyedzadeh, Saleh (2014) Performance of multi-wavelength erbium doped fiber laser on free space optical medium. In: The 5th International Conference on Photonics 2014, 2-4 Sept. 2014, Palace of the Golden Horses, Kuala Lumpur, Malaysia. (pp. 99-101).

Kakaee, Majid H. and Essa, Shawnim I. and Seyedzadeh, Saleh and Mokhtar, Makhfudzah and Ahmad Anas, Siti Barirah and Sahbudin, Ratna Kalos Zakiah (2014) Proposal of multi-service (MS) code to differentiate quality of services for OCDMA systems. In: 5th International Conference on Photonics (ICP 2014), 2-4 Sept. 2014, Palace of the Golden Horses, Kuala Lumpur, Malaysia. (pp. 176-178).

Kharazi, Seyed Mohammad Saleh Seyedzadeh and Sahbudin, Ratna Kalos Zakiah and Abas, Ahmad Fauzi and Ahmad Anas, Siti Barirah (2013) Weight optimization of variable weight OCDMA for triple-play services. In: 4th International Conference on Photonics (ICP2013), 28-30 Oct. 2013, Equatorial Hotel Melaka, Malaysia. (pp. 99-101).

Shargh, Raheleh Sonee and Al-Mansoori, Mohammed Hayder and Ahmad Anas, Siti Barirah and Sahbudin, Ratna Kalos Zakiah and Abu Bakar, Muhammad Hafiz and Mahdi, Mohd Adzir (2012) Effect of Raman pump direction on conventional multiwavelength Brillouin-Raman fiber laser. In: 3rd International Conference on Photonics 2012 (ICP 2012), 1-3 Oct. 2012, Penang, Malaysia. (pp. 184-186).

Kakaee, Majid H. and Seyed Mohammad Saleh, Seyedzadeh Kharazi and Ahmad Anas, Siti Barirah and Fadhil, Hilal Adnan and Sahbudin, Ratna Kalos Zakiah and Mokhtar, Makhfudzah (2012) Performance analysis of hybrid SAC-OCDMA/WDMA system using Random Diagonal code. In: 3rd International Conference on Photonics 2012 (ICP 2012), 1-3 Oct. 2012, Penang, Malaysia. (pp. 285-289).

Kharazi, Seyed Mohammad Saleh Seyedzadeh and Mahdiraji, Ghafour Amouzad and Sahbudin, Ratna Kalos Zakiah and Mokhtar, Makhfudzah and Abas, Ahmad Fauzi and Ahmad Anas, Siti Barirah (2011) Performance analysis of a variable-weight OCDMA system under the impact of fiber impairments. In: 2011 IEEE 2nd International Conference on Photonics, 17-19 Oct. 2011, Le Meridien Hotel, Kota Kinabalu, Sabah. .

Muhammad Amin, Ahmad Fairuz and Aris, Ishak and Raja Abdullah, Raja Syamsul Azmir and Sahbudin, Ratna Kalos Zakiah (2009) Embedded system implementation on FPGA system with μCLinux OS. In: Conference on Advanced Materials and Nanotechnology (CAMAN 2009), 3-5 Nov. 2009, Putra World Trade Centre (PWTC), Kuala Lumpur. (pp. 1-9).

Sahbudin, Ratna Kalos Zakiah and Abdullah, Mohamad Khazani and Samad, M. D. A. and Mahdi, Mohd Adzir and Ismail, Maimunah and Mokhtar, Makhfudzah (2007) Incoherent hybrid subcarrier multiplexed spectral-amplitude-coding optical CDMA system using direct decoding detection technique. In: International Conference on Instrumentation, Communication and Information Technology (ICICI) , August 8-9 2007, Bandung, Indonesia. (pp. 146-150). (Unpublished)

Zan, Zuraidah and Syed Junid, Syed Alwee Aljunid and Abdullah, Mohamad Khazani and Sahbudin, Ratna Kalos Zakiah and Yaacob, Mohd Hanif and Mokhtar, Makhfudzah and Shaari, Sahbudin (2006) Effects of the power differences in the AND-subtraction detection technique in SAC-OCDMA system performance. In: 2006 IEEE International Conference on Semiconductor Electronics (ICSE 2006), 29 Nov.-1 Dec. 2006, Kuala Lumpur, Malaysia. (pp. 1001-1005).

Sahbudin, Ratna Kalos Zakiah and Syed Junid, Syed Alwee Aljunid and Abdullah, Mohamad Khazani and Othman, Mohamed and Samad, M. D. A. and Mahdi, Mohd Adzir and Ismail, Mahamod (2006) Performance comparison of complementary and AND subtraction detection techniques for hybrid SCM SAC-OCDMA system. In: 5th International Conference on Optical Internet (COIN 2006), 9-13 July 2006, Jeju, South Korea. (pp. 31-33).

Zan, Zuraidah and Abdullah, Mohamad Khazani and Syed Junid, Syed Alwee Aljunid and Sahbudin, Ratna Kalos Zakiah and Yaacob, Mohd Hanif and Mokhtar, Makhfudzah and Shaari, Sahbudin (2006) Wavelength shifting in the Fiber Bragg Grating (FBG) based encoder and decoder modules for SAC-OCDMA system. In: 2006 IEEE International Conference on Semiconductor Electronics (ICSE 2006), 29 Nov.-1 Dec. 2006, Kuala Lumpur, Malaysia. (pp. 996-1000).

Kandasamy, Saravanan and Prihandoko, and Mohd Ali, Borhanuddin and Prakash, Veeraraghavan and Sahbudin, Ratna Kalos Zakiah (2003) Improved handoff call dropping probability (HCDP) in adaptive quality of service (AdQoS) in multimedia wireless networks using hierarchical cellular approach. In: 4th National Conference on Telecommunication Technology (NCTT 2003), 14-15 Jan. 2003, Concorde Hotel, Shah Alam. (pp. 127-131).

Kandasamy, Saravanan and Prihandoko, and Mohd Ali, Borhanuddin and Prakash, Veeraraghavan and Sahbudin, Ratna Kalos Zakiah (2003) New call blocking probability (NCBP) in improved adaptive quality of service (AdQoS) for wireless multimedia communications using hierarchical cellular approach. In: 9th Asia-Pacific Conference on Communications (APCC 2003) in conjunction with 6th Malaysia International Conference on Communications (MICC 2003), 21-24 Sept. 2003, City Bayview Hotel, Penang, Malaysia. (pp. 669-674).

Sali, Aduwati and Noordin, Nor Kamariah and Mohd Ali, Borhanuddin and Sahbudin, Ratna Kalos Zakiah and Anthony Dass, Angeline and Ng, Chee Kyun (2002) Modelling of handover of multimedia traffic in mobile satellite communication. In: 2002 Student Conference on Research and Development (SCOReD 2002), 16-17 July 2002, Grand Blue Wave Hotel, Shah Alam, Malaysia. (pp. 237-241).

Aris, Ishak and Hulley, L. N. and Mariun, Norman and Sahbudin, Ratna Kalos Zakiah (1998) Development of a pulse-width modulated power MOSFET-based audio amplifier. In: 1998 IEEE International Conference on Semiconductor Electronics (ICSE'98), 24-26 Nov. 1998, Equatorial Hotel, Bangi. (pp. 152-156).

Aris, Ishak and Hulley, Lance Norman and Mariun, Norman and Sahbudin, Ratna Kalos Zakiah (1998) Using curve-fitting optimisation technique to estimate power MOSFET model parameters for PECT II system. In: 1998 IEEE International Conference on Semiconductor Electronics (lCSE'98), 24-26 Nov. 1998, Equatorial Hotel, Bangi. (pp. 157-161).

Sahbudin, Ratna Kalos Zakiah (2010) Hybrid subcarrier - optical spectrum code division multiplexing system with spectral direct decoding detection technique. PhD thesis, Universiti Putra Malaysia.