Title :
Effect of packet duration and channel prediction in adaptive modulation
Author :
Xin Fang ; Xiaohu You
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
In this paper, effect of packet duration and channel prediction is analyzed in adaptive modulation. Spectral efficiency equations are derived for both systems with and without channel prediction. Numerical results show that systems with channel prediction can get maximum spectral efficiency while systems without channel prediction but chosen optimum packet duration can get suboptimum spectral efficiency, which is inversely proportional to Doppler frequency.
Keywords :
Doppler effect; adaptive modulation; prediction theory; spectral analysis; telecommunication channels; Doppler frequency; adaptive modulation; channel prediction; packet duration; spectral efficiency equations; Capacity planning; Equations; Fading; Laboratories; Mobile communication; Modems; Signal to noise ratio; Throughput; Time varying systems; Wireless communication;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258258
