지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2009.11
- 수록면
- 1,059 - 1,066 (8page)
이용수
초록· 키워드
오류제보하기
In this paper, we propose the precoder with superimposed pilots for orthogonal frequency-division multiple access (OFDMA) systems in order to enhance the transmission efficiency of the system and reduce peak-to-average power ratio (PAPR) which is the problem in OFDMA uplink. In wireless communication systems, the way to improve transmission efficiency is 1) to reduce bit error rate (BER) or 2) to increase data rate. In the proposed scheme, we design the precoder and superimposed pilots in the transmitter and use them in the receiver for increasing data rate, caused by the saved transmission bandwidth thanks to the superimposed pilots. In addition, we improve BER performance with the help of the frequency diversity gain caused by precoding. Also using superimposed pilots, we enhance the PAPR performance by increasing the average output power of the signal.
목차
ABSTRACT
Ⅰ. Introduction
Ⅱ. System Description
Ⅲ. Design of Precoder and Superimposed Pilots
Ⅳ. Simulation Results
Ⅳ. Conclusions
References
참고문헌 (5)
참고문헌 신청
1. [학술지(정기간행물)] - L. Tong / 2004 / Pilot assisted wireless transmissions - General model, design criteria, and signal processing / IEEE Signal Processing Magazine 21 (6) : 12 ~ 25
2. [학술지(정기간행물)] - D. Falconer / 2002 / Frequency domain equalization for single-carrier broadband wireless systems / IEEE Commun. Magazine 40 (4) : 58 ~ 66
3. [학술지(정기간행물)] - Z. Wang / 2003 / Complex-field coding for OFDM over fading wireless channels / IEEE Trans. Inform. Theory 49 (3) : 707 ~ 720
4. [학술지(정기간행물)] - H. Luke / 1992 / Families of polyphase sequences with near-optimal two-valued auto-and corss-correlation functions / Elect. Letters 28 (1)
5. [학술지(정기간행물)] - M. Morelli / 2001 / A comparison of pilot-aided channel estimation methods for OFDM systems / IEEE Trans. Signal Processing 49 (12)
2. [학술지(정기간행물)] - D. Falconer / 2002 / Frequency domain equalization for single-carrier broadband wireless systems / IEEE Commun. Magazine 40 (4) : 58 ~ 66
3. [학술지(정기간행물)] - Z. Wang / 2003 / Complex-field coding for OFDM over fading wireless channels / IEEE Trans. Inform. Theory 49 (3) : 707 ~ 720
4. [학술지(정기간행물)] - H. Luke / 1992 / Families of polyphase sequences with near-optimal two-valued auto-and corss-correlation functions / Elect. Letters 28 (1)
5. [학술지(정기간행물)] - M. Morelli / 2001 / A comparison of pilot-aided channel estimation methods for OFDM systems / IEEE Trans. Signal Processing 49 (12)
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UCI(KEPA) : I410-ECN-0101-2009-567-019141381