Rate-Maximizing Adaptation in MIMO-OFDM with Space-Time-Frequency Coding
عنوان مقاله: Rate-Maximizing Adaptation in MIMO-OFDM with Space-Time-Frequency Coding
شناسه ملی مقاله: ICEE13_336
منتشر شده در سیزدهمین کنفرانس مهندسی برق ایران در سال 1384
شناسه ملی مقاله: ICEE13_336
منتشر شده در سیزدهمین کنفرانس مهندسی برق ایران در سال 1384
مشخصات نویسندگان مقاله:
Mahdi Golparvar Roozbahani - Sharif University of Technology
Babak Khalaj - Sharif University of Technology
خلاصه مقاله:
Mahdi Golparvar Roozbahani - Sharif University of Technology
Babak Khalaj - Sharif University of Technology
By matching transmitter parameters to time-varying channel conditions, adaptive modulation provides considerably improved communications relative to designs assuming no channel knowledge at the transmitter. In this paper, after introducing a space-time-frequency (STF) coding method for multiantenna orthogonal frequency division multiplexing (OFDM) transmission over frequency-selective fading channels, we develop an adaptive MIMO-OFDM transmitter based on available channel state information. Under the constraints of fixed transmit-energy and prescribed error performance, our objective is to maximize the transmission rate by applying an adaptive energy and bit loading scheme across OFDM subcarriers. Simulation results are also presented, which illustrate the tradeoffs between design parameters.
کلمات کلیدی: MIMO-OFDM, Diversity methods, Space-time-frequency codes, Adaptive modulation, Fading channels
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/42212/