Now showing items 1-5 of 5

    • Channels estimation in OFDM system on block-type and comb-type pilot arrangement 

      Mohd Suhaizal, Abu Hassan; Abid, Yahya, Dr.; Farid, Ghani, Prof. Dr.; R. Badlishah, Ahmad, Prof. Dr. (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      In orthogonal frequency division multiplexing (OFDM) systems over time-varying and frequency-selective fading channel, channel estimation and tracking is generally carried out by transmitting known pilot symbols in given ...
    • Development and performance evaluation of hierarchical quadrature amplitude modulation (HQAM) for image transmission over wireless channels 

      Md. Abdul Kader; Farid, Ghani, Prof. Dr.; R. Badlishah, Ahmad, Prof. Madya Dr. (Institute of Electrical and Electronics Engineers (IEEE), 2011-09-20)
      Asymmetric modulation techniques like Quadrature Amplitude Modulation system is one of the key techniques in building a broadband mobile communication network because of increasing shortage of wireless communication channels. ...
    • Memory efficient set partitioning in hierarchical tree (MESH) for wavelet image compression 

      Farid, Ghani, Prof. Dr.; Abdul Kader; Ekram Khan; R. Badlishah, Ahmad, Prof. Dr. (The Institute of Electronics, Information and Communication Engineers., 2012-09)
      This paper presents a memory efficient version of set partitioning in hierarchical tree (SPIHT). The proposed coder called Memory Efficient SPIHT (MESH) uses a single re-usable list instead of three continuously growing ...
    • Synthesis of finite length multi level sequences for clutter rejection in radar 

      Siti Julia, Rosli; Farid, Ghani, Prof. Dr.; Alif Hasmani, Abd Ghani; R. Badlishah, Ahmad, Prof. Dr. (Institute of Electrical and Electronics Engineers (IEEE), 2012-07-24)
      In radar systems the very low side-lobes that can be achieved with amplitude and phase modulated pulse trains make their use particularly attractive in systems requiring a large dynamic range. Moreover, the excellent ...
    • Waveform design for improved range and Doppler resolution in radar 

      Farid, Ghani, Prof. Dr.; Mohd Alif Hasmani, Abd Ghani; Siti Julia, Rosli; R. Badlishah, Ahmad, Prof. Dr. (Institute of Electrical and Electronics Engineers (IEEE), 2012-02)
      The choice of a suitable transmit waveform is an important problem in radar design. This is so because the waveform controls resolution and clutter performance and also bears heavily on the system cost. Theoretical studies ...