This paper proposes a frequency diversity transmission scheme that obtains a frequency diversity effect and does not deteriorate spectrum efficiency by utilizing multiple carrier frequencies alternatively, not simultaneously. This scheme improves the bit error rate (BER) of significant information bits by sacrificing that of insignificant bits in fading channels. Simulation results show that the error floor of significant information bits is improved by more than 80% while that of insignificant bits is doubled. Computer simulation results show that the proposed scheme improves the ADPCM voice signal-to-noise ratio (SNR) by approximately 4 dB even when the frequency correlation is 0.5.
|出版ステータス||Published - 1996|
|イベント||Proceedings of the 1996 5th IEEE International Conference on Universal Personal Communications, ICUPC'96. Part 1 (of 2) - Cambridge, MA, USA|
継続期間: 1996 9月 29 → 1996 10月 1
|Other||Proceedings of the 1996 5th IEEE International Conference on Universal Personal Communications, ICUPC'96. Part 1 (of 2)|
|City||Cambridge, MA, USA|
|Period||96/9/29 → 96/10/1|
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