The formulation of digital intercom agreement is the hot issue of current research, and channel codec technology is one of the key technologies of digital intercom.The DCR system has adopted the advantages of dPMR system channel encoding scheme.Meanwhile, the DCR system uses the punctured convolutional code error correction technology, improving the ability to control channel transmission errors.In this paper, the codec scheme and the punctured convolution codec based on DCR protocol method are studied, and the ber of the different kinds of error correction codec technique is analyzed in detail.The simulation results indicate that, the punctured convolution codec can correct the burst errors effectively and reduce the error rate significantly in the multipath fading channel.
LI Yu-feng, YANG Jun, GUAN Qing-yang
. Research on channel codec method in DCR system[J]. Journal of Shenyang Aerospace University, 2014
, 31(1)
: 67
-71
.
DOI: 10.3969/j.issn.2095-1248.2014.01.014
[1]李进良.我国必须制定统一的数字对讲机国家标准[J].中国无线电, 2012, 12:18-22.
[2]ETSI TR 102 398 V1.1.2 (2008-05).Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Mobile Radio (DMR) General System Design[S/OL].ETSI, 2008.http://www.etsi.org/deliver/etsi_tr/102300_102399/102398/01.01.02_60/tr_102398v010102p.pdf.
[3]ETSI TS 102 490 V1.2.1 (2006-08).Electromagnetic compatibility and Radio spectrum Matters (ERM); Peer-to-Peer Digital Private Mobile Radio using FDMA with a channel spacing of 6, 25 kHz with e.r.p.of up to 500 mW.[S/OL].ETSI, 2006.http://www.etsi.org/deliver/etsi_ts/102400_102499/102490/01.02.01_60/ts_102490v010201p.pdf.
[4]Digital Convenience Radio Equipment for Simplified Service V.1.3.Association of Radio Industries and Businesses[DB/OL].2012.12.18.http://www.arib.or.jp/english/html/overview/doc/1-STD-T98v1_3.pdf.
[5]王新梅, 肖国镇.纠错码——原理与方法[M].西安:西安电子科技大学出版社, 2001:443-444.
[6]Chunlong Bai, Bartosz Mielczarek, Witold A.Krzymien, et al.Improved analysis of list decoding and its application to convolutional codes and turbo codes[J].IEEE Trans.Inform.Theory, 2007, 53(2):615-627.
[7]Alexandros K, Panagiotis R, Nicholas K. New constructions of high-performance low-complexity convolutional code[J].IEEE Trans.Communications, 58(7):1950-1961.
[8]Jie Luo.On low-complexity maximum-likelihood decoding of convolutional codes[J].IEEE Transactions on Informational Theory, 2008, 54(12):5756-5760.
