Allocation of subchannel based on SINR and OVSF codes with allocation rate to reduce the self interference in OFDMA-CDM with rate adaptation

Satoru Iijima, Iwao Sasase

研究成果: Conference contribution

抜粋

In orthogonal frequency division multiple access - code division multiplexing (OFDMA-CDM), rate adaptation is known as one of the key techniques to improve the reliability of the transmission signal. However, since the one subchannel size in OFDMA-CDM depends on the spreading code length, the fading shift which the transmission signal receives per one subchannel might depend on the spreading code length. If the influence of the fading shift can be suppressed according to the multiplexing ratio, the effect of the rate adaptation can be improved. In addition, by allocating the subchannel with multiuser diversity in OFDMA, the effect of the rate adaptation can be more improved. We propose a subchannel allocation scheme based on the maximum, minimum and average signal to interference plus noise ratio (SINR) and orthogonal variable spreading factor (OVSF) code allocation to despread in narrowband according to the multiplexing ratio. We demonstrate that the proposed scheme can improve the bit error rate (BER) performance.

元の言語English
ホスト出版物のタイトル2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009
DOI
出版物ステータスPublished - 2009 12 1
イベント2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009 - Tokyo, Japan
継続期間: 2009 9 132009 9 16

出版物シリーズ

名前IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Other

Other2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009
Japan
Tokyo
期間09/9/1309/9/16

    フィンガープリント

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

これを引用

Iijima, S., & Sasase, I. (2009). Allocation of subchannel based on SINR and OVSF codes with allocation rate to reduce the self interference in OFDMA-CDM with rate adaptation. : 2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009 [5450370] (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC). https://doi.org/10.1109/PIMRC.2009.5450370