인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
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
- 저자정보
초록·키워드
This paper presents a method of the performance improvement for 16QAM-TCM in the frequency selective Rayleigh fading channel. The proposed system has a high spectral efficiency and high transmission quality in frequency selective Rayleigh fading channel. In fading compensation, we use multi-pilot symbols that compensates for a maximum delay time of up to one symbol duration. In order to improve the BER performance, we use 3/4 Trellis coded modulation scheme of 16QAM and use the bit reversal block interleaver which can randomize burst errors. Results show that significant improvements in the BER performance can be obtained by the proposed techniques. selective fading compensation technique that compensates for a maximum delay time of up to one symbol duration. It is based on two-ray fading channel model. We use three pilot symbols located at the beginning of each frame, estimate a channel characteristics with two different factors, and compensate for fading. Also, in order to improve the BER performance, we use 3/4 Trellis coded modulation scheme that provide coding gain without bandwidth expansion, and use the bit reversal block interleaver which can randomize burst errors. Results show that significant improvements in the BER performance can be obtained by the proposed techniques. We show that this method is useful in frequency selective Rayleigh fading by computer simulation.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
최근 본 자료 전체보기
UCI(KEPA) : I410-ECN-0101-2009-569-013222767