Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2002.07c
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- Pages.1440-1443
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- 2002
Throughput Improvement of an AMQAM Scheme by using New Switching Thresholds over Nakagami-m Fading Channels
- Lee, Youngkou (Dept. of Information and Communications, KJIST) ;
- Park, Sungsoo (Dept. of Information and Communications, KJIST) ;
- Insoo Koo (Dept. of Information and Communications, KJIST) ;
- Kim, Seung-Geun (Dept. of Information and Communications, KJIST) ;
- Kim, Kiseon (Dept. of Information and Communications, KJIST)
- Published : 2002.07.01
Abstract
In this paper, we investigate the throughput improvement of an adaptive M-ary quadrature modulation (AMQAM) scheme by using new switching thresh-olds over slow frequency nonselective Nakagami-m fading channels. The new switching thresholds are obtained by using the approximated BER expressions with complimentary error functions for each modulation scheme given in AWGN channels. By using the new switching thresholds, we can improve the maximum system throughput. For example, we get the maximum throughput improvement about 0.32 when tile target BER is 10
Keywords
- Adaptive M-ary quadrature modulation (AMQAM);
- Nakagami-m distribution;
- Switching threshold;
- System throughput;
- Average bit error rate