Feasibility Study of Uplink Transmission with 64 QAM Based on Results of MBWA System Field Trial

Author

Oguma, H. ; Kameda, S. ; Takagi, T. ; Tsubouchi, K. ; Izuka, N. ; Asano, Y. ; Yamazaki, Y.

Author_Institution

Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan

fYear

2009

fDate

Nov. 30 2009-Dec. 4 2009

Firstpage

1

Lastpage

5

Abstract

In this paper, we report on a mobile broadband wireless access (MBWA) system field trial with fast low-latency access with seamless handoff orthogonal frequency division multiplexing (FLASH-OFDM), which was carried out at Sendai city in Japan. This paper discusses the feasibility of uplink transmission with the maximum modulation level of 64 QAM, using the measured uplink throughput performances when the maximum modulation levels are quadrature phase shift keying (QPSK) and 16 quadrature amplitude modulation (QAM). The field trial results show that 64 QAM improves the uplink throughput performance in 30% of the field trial area. It is considered that the maximum modulation level of 64 QAM is feasible to provide a mobile broadband data communication service with a higher throughput in uplink as well as downlink.

Keywords

OFDM modulation; broadband networks; mobile radio; quadrature amplitude modulation; quadrature phase shift keying; radio access networks; 16 quadrature amplitude modulation; 64 QAM; FLASH-OFDM; MBWA system field trial; QPSK; data communication service; fast low-latency access-with-seamless handoff orthogonal frequency division multiplexing; mobile broadband wireless access system; quadrature phase shift keying; uplink transmission; Amplitude modulation; Broadband communication; Cities and towns; OFDM; Performance evaluation; Phase measurement; Phase modulation; Quadrature amplitude modulation; Quadrature phase shift keying; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

GLOBECOM Workshops, 2009 IEEE

Conference_Location

Honolulu, HI

Print_ISBN

978-1-4244-5626-0

Electronic_ISBN

978-1-4244-5625-3

Type

conf

DOI

10.1109/GLOCOMW.2009.5360768

Filename

5360768