Sentence examples for multiple symbol detection from inspiring English sources
In practice, however, pilot symbols are inserted periodically even with multiple symbol detection, to avoid catastrophic error propagation in differential decoding.
Trellis structure is employed to assist the detection and decoding of the inner differential code, but unlike the case of multiple symbol detection, the trellis is not expanded and has 2 states only.
The method harvests the benefits from the concept of the multiple symbols detection and outputs a better bit error rate (BER) performance than the single symbol TR system whilst exhibiting a low computational complexity (, where is block size and is the maximum number of iterations).
Its inherent SNR loss can be greatly minimized by using the multiple-symbol detection.
The computational complexity of the proposed DD with multiple-symbol detection using fast algorithm is O(N log2N), which is independent of the constellation size M, while that of the SD is O(M), which are both linear.
Although multiple symbol differential detection is possible, for complexity concerns, we consider a simple iterative differential detection and decoding receiver, whose structure is shown in Figure 6.
A multiple symbol double-differential detection based on least squares criteria was proposed in[16], where the system performance was proved to be insensitive to different carrier offsets.
According to the theories of multiple-symbol differential detection and maximum-likelihood detection, we combine the multiple-order differential information with the Viterbi algorithm.
This algorithm combines the multiple-order combined differential information with the Viterbi algorithm according to the theories of multiple-symbol differential detection and maximum-likelihood detection.
The process is similar to the way in which a PIC receiver removes the interference from the multiple users to perform the symbol detection.
The multiple-symbol differential detection (MSDD) of M-ary phase shift keying (MPSK) signals in the presence of frequency offset is studied in [10 12], which introduce a double differential MPSK modulation to realize the robustness to both frequency and phase offsets.
