D. Divsalar, M. K. Simon, and M. Shahshahani, "The performance of trellis-coded mdpsk with multiple symbol detection," IEEE Trans. Commun., vol. 38, pp. 1391--1403, 1990.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....derivation of the optimum NSE metric the channel phase is assumed to be constant for the entire transmission. In practice, however, the channel phase is often slowly time variant and optimum NSE suffers from severe performance degradations. In the last decade a variety of suboptimum NSE schemes [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14] have been proposed to overcome the aforementioned problems. These NSE schemes are derived from optimum NSE and most of them use an observation window of a finite size N , N 2, whereas the schemes in [6] and [13] employ an infinite but exponentially decaying observation window with a forgetting ....

....be divided into three classes. The schemes proposed in [3, 7] belong to the first class, where a limited tree search is used for decoding. Since, in general, it is more convenient to use a trellis for decoding, we do not consider this approach in the following. The NSE schemes of the second class [5, 9, 10] are motivated by multiple symbol detection [15, 16] i.e. one branch in the decoding trellis embraces several branches of the original code (ISI) trellis. Therefore, a decoding trellis with the same number of states as the original trellis results. However, the number of branches originating ....

D. Divsalar, M.K. Simon, and M. Shahshahani. The Performance of Trellis--Coded MDPSK with Multiple Symbol Detection. IEEE Transactions on Communications, COM38: 1391--1403, September 1990.

.... of decision variables is necessary in order to mitigate the effects of fading [8] Both requirements can be met by performing multiple symbol differential detection (MSDD) where blocks of received symbols are independently evaluated to provide decision variables on 1 information symbols [3] [9] [11] Thereby, the blocks overlap by one symbol. Moreover, if transmission with high bandwidth efficiency is desired, the straightforward extension of differential phase encoding is to transmit the information both in phase and in amplitude changes, which is known as differential amplitude and ....

D. Divsalar, M. K. Simon, and M. Shahshahani, "The performance of trellis-coded MDPSK with multiple symbol detection," IEEE Trans. Commun., vol. 38, pp. 1391--1403, Sept. 1990.

.... of decision variables is necessary in order to mitigate the e ects of fading [8] Both requirements can be met by performing multiple symbol di erential detection (MSDD) where blocks of N received symbols are independently evaluated to provide decision variables on N 1 information symbols [3, 9, 10, 11]. Thereby, the blocks overlap by one symbol. Moreover, if transmission with high bandwidth eciency is desired, the straightforward extension of di erential phase encoding is to transmit the information both in phase and in amplitude changes, which is known as d i erential a mplitude and ....

D. Divsalar, M.K. Simon, and M. Shahshahani. The Performance of Trellis-Coded MDPSK with Multiple Symbol Detection. IEEE Trans. on Communications, 38(9):1391-1403, September 1990.

....encoded phase shift keying (MDPSK) modulation at the transmitter. MDPSK and demodulation where decision variables on N 1 information symbols are provided based on the independent evaluation of blocks of N 2 consecutive received symbols, which overlap by one symbol, are investigated in [3, 7, 8, 4]. In a more general framework, noncoherently detectable convolutional codes, which include di erential encoding, are introduced in [5, 9] Trellis based noncoherent detection schemes are developed in [10, 11, 12] There, when channel coding is applied, decoding is done in an augmented code trellis ....

D. Divsalar, M.K. Simon, and M. Shahshahani. The Performance of Trellis-Coded MDPSK with Multiple Symbol Detection. IEEE Trans. Com., 38(9):1391-1403, September 1990.

....encoded phase shift keying (MDPSK) modulation at the transmitter. MDPSK and demodulation where decision variables on N 1 information symbols are provided based on the independent evaluation of blocks of N 2 consecutive received symbols, which overlap by one symbol, are investigated in [2, 6, 7, 3]. In a more general framework, noncoherently detectable convolutional codes, which include di erential encoding, are introduced in [4, 8] Methods for noncoherent decoding using maximally overlapped observations are developed in [9, 10, 11] There, when channel coding is applied, decoding is done ....

D. Divsalar, M.K. Simon, and M. Shahshahani. The Performance of Trellis-Coded MDPSK with Multiple Symbol Detection. IEEE Trans. Com., 38(9):1391-1403, September 1990.

....detector proposed here follows directly from the GLRT interpretation, and can be designed to have an arbitrarily small level of degradation from the optimal performance. Coding (over multiple coherence intervals) for DPSK with multiple symbol demodulation has been studied in some detail([21] [25] This topic is not addressed in this paper, since our focus here is on signal design within a coherence interval. In contrast to the literature on DPSK, much less is known about amplitude phase modulation for noncoherent systems, with most work to date concentrating on demodulation based on ....

D.Divsalar, M.K.Simon, and M. Shahshahani, "The performance of trellis-coded MDPSK with multiple symbol detection," IEEE Trans. on Comm., vol. 38, no. 9, pp. 1391--1403, September 1990. 39

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D. Divsalar, M. K. Simon, and M. Shahshahani, "The performance of trellis-coded mdpsk with multiple symbol detection," IEEE Trans. Commun., vol. 38, pp. 1391--1403, 1990.

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