Title :
Optimum Resource Block Bandwidth for Frequency Domain Channel-Dependent Scheduling in Evolved UTRA Downlink OFDM Radio Access
Author :
Nagata, Satoshi ; Ofuji, Yoshiaki ; Higuchi, Kenichi ; Sawahashi, Mamoru
Author_Institution :
Dept. of IP Radio Network Dev., NTT DoCoMo, Inc., Kanagawa
Abstract :
This paper presents the optimum resource block (RB) bandwidth for frequency and time domain channel-dependent scheduling based on system-level simulations in the downlink orthogonal frequency division multiplexing (OFDM) based radio access. The simulation results clarifies that the optimum RB bandwidth is within the range of approximately 150 to 375 kHz assuming typical power delay profile models in a cellular system such as typical urban, pedestrian-B, and vehicular-A modes, from the viewpoint of the multiuser diversity effect gained in frequency domain channel-dependent scheduling. The results also show that considering the overhead loss by the control signaling bits for scheduling, adaptive modulation and coding and hybrid ARQ with packet combining, the optimal RB bandwidth is in the range of approximately 375 to 750 kHz
Keywords :
3G mobile communication; OFDM modulation; adaptive codes; adaptive modulation; automatic repeat request; cellular radio; radio access networks; scheduling; UMTS terrestrial radio access; adaptive modulation and coding; cellular system; evolved UTRA downlink OFDM radio access; frequency domain channel-dependent scheduling; hybrid ARQ; multiuser diversity effect; optimum resource block bandwidth; orthogonal frequency division multiplexing; overhead loss; packet combining; power delay profile models; time domain channel-dependent scheduling; Adaptive scheduling; Bandwidth; Delay effects; Diversity reception; Downlink; Frequency domain analysis; OFDM; Optimal control; Power system modeling; Programmable control;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1682805
