A novel frame level orthogonal code hopping multiplexing scheme

Author

Seo, Young Ik ; Sung, Dan Keun

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea

Volume

4

fYear

2005

Firstpage

2218

Abstract

A new frame level orthogonal code hopping multiplexing (FrOCHM) scheme is proposed to statistically multiplex bursty data user traffic in downlink. The FrOCHM scheme solves the channel inefficiency problem arising in conventional CDMA systems. Moreover, combining both a scheduling-based multiplexing scheme and our previously proposed orthogonal code hopping multiplexing (OCHM) scheme, the FrOCHM mitigates the complexity of the scheduling-based multiplexing scheme and does not need additional E_b/N₀ required in the OCHM scheme. Simulation results show that the FrOCHM can support 251 mobile stations, while the scheduling-based multiplexing scheme supports 136 mobile stations when the user activity is 0.05 and the data rate is 64 kbps.

Keywords

channel coding; code division multiple access; data communication; mobile radio; multiplexing; radio links; scheduling; telecommunication traffic; 64 Kbit/s; CDMA system; bursty data user traffic; frame level orthogonal code hopping multiplexing scheme; scheduling-based multiplexing scheme; Base stations; Decoding; Degradation; Delay; Downlink; Multiaccess communication; OFDM; Processor scheduling; Quality of service; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2005. ICC 2005. 2005 IEEE International Conference on

Print_ISBN

0-7803-8938-7

Type

conf

DOI

10.1109/ICC.2005.1494730

Filename

1494730