TY - GEN
T1 - Performance of trellis-coded-modulation for a multi-gigabit millimeter-wave WPAN system in the presence of hardware impairments
AU - Sum, Chin Sean
AU - Baykas, Tuncer
AU - Lei, Ming
AU - Nishiguchi, Yoshinori
AU - Kimura, Ryota
AU - Funada, Ryuhei
AU - Shoji, Yozo
AU - Harada, Hiroshi
AU - Kato, Shuzo
PY - 2008
Y1 - 2008
N2 - This paper proposes the employment of trelliscoded-modulation (TCM) to improve error performance and/or to increase system throughput in a multi-gigabit physical layer (PHY) design for millimeter-wave 60GHz wireless personal area network (WPAN) systems. Hardware impairments such as the 60GHz power amplifier (PA) non-linear distortion and the 60GHz phase-locked loop (PLL) phase noise (PN) are considered in the system design. It is found that for residential environment, in the AWGN and line-of-sight (LOS) multipath channels, TCM with hard decision Viterbi decoding is able to offer coding gain of approximately 1.5dB, and in the non-line-of-sight (NLOS) multipath channel, approximately 1.2dB, compared with quadrature phase shift keying (QPSK). By considering non-linear distortion in the PA, bit error rate (BER) degradation of 0.8dB is observed in LOS channel. As for NLOS channel, the same non-linear distortion causes error floor at BER=10-5. It is also observed that a maximum of 2-times improvement of the PHY throughput can be achieved by TCM in the NLOS environment. Additional gain of 0.8dB can be obtained in NLOS channels by employing longer decoder traceback length (TBL) of 20 instead of 10.
AB - This paper proposes the employment of trelliscoded-modulation (TCM) to improve error performance and/or to increase system throughput in a multi-gigabit physical layer (PHY) design for millimeter-wave 60GHz wireless personal area network (WPAN) systems. Hardware impairments such as the 60GHz power amplifier (PA) non-linear distortion and the 60GHz phase-locked loop (PLL) phase noise (PN) are considered in the system design. It is found that for residential environment, in the AWGN and line-of-sight (LOS) multipath channels, TCM with hard decision Viterbi decoding is able to offer coding gain of approximately 1.5dB, and in the non-line-of-sight (NLOS) multipath channel, approximately 1.2dB, compared with quadrature phase shift keying (QPSK). By considering non-linear distortion in the PA, bit error rate (BER) degradation of 0.8dB is observed in LOS channel. As for NLOS channel, the same non-linear distortion causes error floor at BER=10-5. It is also observed that a maximum of 2-times improvement of the PHY throughput can be achieved by TCM in the NLOS environment. Additional gain of 0.8dB can be obtained in NLOS channels by employing longer decoder traceback length (TBL) of 20 instead of 10.
KW - 60GHz
KW - Hardware impairments
KW - IEEE 802.15.3c
KW - Millimeter-wave
KW - TCM
KW - WPAN
UR - http://www.scopus.com/inward/record.url?scp=52949135964&partnerID=8YFLogxK
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U2 - 10.1109/IWCMC.2008.117
DO - 10.1109/IWCMC.2008.117
M3 - Conference contribution
AN - SCOPUS:52949135964
SN - 9781424422029
T3 - IWCMC 2008 - International Wireless Communications and Mobile Computing Conference
SP - 678
EP - 683
BT - IWCMC 2008 - International Wireless Communications and Mobile Computing Conference
T2 - International Wireless Communications and Mobile Computing Conference, IWCMC 2008
Y2 - 6 August 2008 through 8 August 2008
ER -