A new reduced-complexity algorithm for multiple-symbol differential detection of m-ary DDPSK

  title={A new reduced-complexity algorithm for multiple-symbol differential detection of m-ary DDPSK},
  author={Yong Nie and Yue-hong Shen and Mingxi Guo},
Although multiple-symbol differential detection (MSDD) of double differential phase-shift keying (DDPSK) provides much better error performance than conventional double differential detection, its complexity is much higher. In this paper, a fast algorithm for MSDD is presented, which reduces the number of trellis paths searched by using a subset search concept. It is proved that its performance is identical to that of the original receiver, while its complexity is only proportional to the (N-1… 



A new reduced-complexity algorithm for multiple-symbol differential detection

  • Bin Li
  • Computer Science
    IEEE Communications Letters
  • 2003
This work proposes a reduced-complexity algorithm for MSDD, which shows that the performance of the reduced complexity receiver is nearly identical to that of the original receiver, but with typical parameters, the number of phase sequences searched can be reduced by a factor of sixteen for QPSK to over four thousand for 16-PSK thereby leading to significant receiver complexity reduction.

Multiple-symbol detection for orthogonal modulation in CDMA system

It is shown that for uncoded systems, the asymptotic error performance of the MSD is almost as good as that of the ideal coherent detector.

Multiple-symbol differential detection of MPSK

A differential detection technique for MPSK (multiple-phase shift keying), which uses a multiple-symbol observation interval, is presented, and its performance is analyzed and simulated, finding substantial performance improvement can be obtained for only one or two additional symbol intervals of observation.

Frequency Offset Invariant Multiple Symbol Differential Detection of MPSK

It is shown that the proposed MSDD receiver is robust to the distortions caused by the random frequency variation and compared to that of an autocorrelation demodulator for the case where the observation interval approaches infinity.

Reduced-state Viterbi differential detection using a recursively estimated phase reference for M-ary DPSK

The reduced-state Viterbi algorithm (VA), with feedback incorporated into the structure of path metric computations is presented for the differential detection of M-ary DPSK signals. The number of

A fast algorithm for multiple-symbol differential detection of MPSK

The paper gives a fast (optimum) algorithm to implement MSDD, which uses maximum likelihood sequence detection of N symbols to achieve a performance gain over conventional 2 symbol differential detection.

On the implementation and performance of single and double differential detection schemes

It is demonstrated that via a simple enhancement of using a 2 T s (instead of T s) delay in the second stage of the encoder and first stage ofThe decoder, the performance degradation can be significantly reduced.

Higher-order differential phase shift keyed modulation

The authors present graphical results that establish when, as a function of the signal energy-to-noise ratio and normalized frequency offset, binary DDPSK is preferable to binary DPSK with respect to performance in additive white Gaussian noise.

Viterbi-decoding differential detection of DPSK

It is shown that the performance loss in the required E b /N 0 of the proposed Viterbi-decoding DD compared with ideal coherent detection with differential decoding is only around 0.15 dB at BER=10 -3.

Angle diversity and space diversity experiments on the Salton/Brawley hop

Space diversity and angle diversity experimental data that have been collected over a three-year period, using 64-QAM radios, on the Salton/Brawley hop in southern California are discussed. Both