Adaptive Wireless Transmission Scheme Considering Stay Time in Spot Mobile Access
佑紀 蓑田, Katsutoshi Tsukamoto, Shozo Komaki · OUKA (Osaka University Knowledge Archive) (Osaka University) · 2004
In this paper, an adaptive transmission scheme considering the stay time in a spot mobile access system is proposed.The proposed adaptive transmission scheme selects the modulation format according to the user's stay time in the spot communication zone and the types of data requested by each user.In the proposed system, when the stay time of a user is short, high-speed modulation is selected for this user.When the stay time of a user is long, a more reliable modulation format is selected.The computer simulation results show that the proposed transmission scheme without any channel estimation can achieve the same or better performance than when using the modulation format fixedly when the carrier-to-noise ratio changes rapidly.