Implementation and field experiments of a 16QAM mobile data system based on PSAM channel sounding and TCM encoding techniques

Author

Kim, Young-Su ; Jeong, Goo-Young ; Kim, Chang-Joo ; Lee, Dong-du ; Mun, Jae-Kyoung ; Park, Han-Kyu ; Choi, Sang-Sam

Author_Institution

ETRI, Taejeon, South Korea

Volume

1

fYear

1996

fDate

15-18 Oct 1996

Firstpage

49

Abstract

This paper reports experimental results of a pilot symbol aided 16QAM system for land mobile communications at 1.9 GHz. To combat the multipath fading phenomena in Rayleigh fading channels, the pilot symbol assisted modulation (PSAM) channel sounding technique, trellis coded modulation (TCM), and space diversity are employed. The TCM coder, with 8 states, has the length of the shortest error event path of 2 and the product of the branch distances along that path of d_pmin²=0.8. We have also designed a two branch MRC space diversity receiver in which each branch has a channel estimation capability. As a result of field experimental measurements, we have obtained the BER=6×10^-4 at E_b/N_o=20 dB in a 16QAM system with diversity and TCM

Keywords

Rayleigh channels; data communication; diversity reception; error correction codes; fading; land mobile radio; multipath channels; quadrature amplitude modulation; radio receivers; trellis coded modulation; 16QAM mobile data system; MRC space diversity receiver; PSAM channel sounding; Rayleigh fading channels; TCM coder; TCM encoding; branch distances product; channel estimation; experimental results; field experiments; land mobile communications; multipath fading; pilot symbol aided 16QAM system; pilot symbol assisted modulation; shortest error event path; space diversity; trellis coded modulation; Amplitude estimation; Data systems; Diversity reception; Fading; Filters; Mobile communication; Modulation coding; Pulse shaping methods; Quadrature amplitude modulation; Radio transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1996. PIMRC'96., Seventh IEEE International Symposium on

Conference_Location

Taipei

Print_ISBN

0-7803-3692-5

Type

conf

DOI

10.1109/PIMRC.1996.567512

Filename

567512