Effects of diversity combining, coding and equalization on digital microcellular mobile communications systems
نام عام مواد
[Thesis]
نام نخستين پديدآور
A. S. M. Al-Ahmari
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
King Fahd University of Petroleum and Minerals (Saudi Arabia)
تاریخ نشرو بخش و غیره
1994
مشخصات ظاهری
نام خاص و کميت اثر
132
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
M.S.
کسي که مدرک را اعطا کرده
King Fahd University of Petroleum and Minerals (Saudi Arabia)
امتياز متن
1994
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
The effects of diversity combining, coding, and equalization on the performance of digital microcellular mobile communication systems, operating over frequency-selective fading channels, are studied using computer simulations. The presence of co-channel interference and additive white Gaussian noise is assumed. The multiple-access channel is statistically modeled by Rician distributed plus lognormally shadowed desired signal and several uncorrelated Rayleigh plus lognormally shadowed interfering signals, propagating according to dual path loss law with a turning point. The modulation schemes considered are BPSK, and DPSK. The channel is modeled by two beams with a relative delay between them. The performance is determined in terms of bit error rate (BER), and spectrum efficiency. It is shown from the computer simulations done on the system that with dual diversity combining and BPSK modulation the irreducible bit error rate (IBER), due to co-channel interference and intersymbol interference (ISI), is reduced from 3.0 usd\timesusd 10 to 1.35 usd\timesusd 10. Also, with linear adaptive equalization and BPSK modulation, the IBER is reduced to 8.0 usd\timesusd 10. The use of Golay (23, 12) code with BPSK modulation enhances the performance of the system by 23.8 dB coding gain at 3.0 usd\timesusd 10 BER.
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Applied sciences
موضوع مستند نشده
Electrical engineering
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )