Digital communication receivers P7

Chia sẻ: Khinh Kha Kha | Ngày: | Loại File: PDF | Số trang:25

lượt xem

Digital communication receivers P7

Mô tả tài liệu
  Download Vui lòng tải xuống để xem tài liệu đầy đủ

Bit Error Rate Degradation Caused by Random Tracking Errors 7.1 Introduction For coherent detection of digitally modulated signals, the receiver must be provided with accurate carrier phase and symbol timing estimates; these estimates are derived from the received signal itself by means of a synchronizer. The bit error rate (BER) performance under the assumption of perfect synchronization is well documented for various modulation formats [l-5]. However, in practice the carrier phase and timing estimates exhibit small random fluctuations (jitter) about their optimum values; these fluctuations give rise to a BER degradation as compared to perfect synchronization. It is important to know...

Chủ đề:

Nội dung Text: Digital communication receivers P7

Đồng bộ tài khoản