Two signaling schemes for improving the error performance of frequency-division-duplex (FDD) transmission systems using transmitter antenna diversity

Two signaling schemes that exploit the availability of multiple (N) antennas at the transmitter to provide diversity benefit to the receiver are proposed. In the first scheme, a channel code of length N and minimum Hamming distance d/sub min/ /spl les/ N is used to encode a group of K information bits. The channel code symbol c/sub i/ is transmitted with the i/sup th/ antenna. At the receiver, a maximum likelihood decoder for the channel code provides a diversity of d/sub min/, as long as each transmitted code symbol is subjected to independent fading. The second scheme introduces deliberate resolvable multipath distortion by transmitting the data bearing signal with antenna 1, and N - 1 delayed versions of it with antennas 2 through N. The delays are unique to each antenna and are chosen to be multiples of the symbol interval. At the receiver, a maximum likelihood sequence estimator resolves the multipath in an optimal manner to realize a diversity benefit of N.

[1]  Dariush Divsalar,et al.  Introduction to Trellis-Coded Modulation With Applications , 1991 .

[2]  R. Gitlin,et al.  The capacity of wireless communication systems can be substantially increased by the use of antenna diversity , 1992, 1st International Conference on Universal Personal Communications - ICUPC '92 Proceedings.

[3]  J. Salz,et al.  Digital transmission over cross-coupled linear channels , 1985, AT&T Technical Journal.

[4]  P. S. Henry,et al.  A new approach to high-capacity digital mobile Radio , 1981, The Bell System Technical Journal.

[5]  James E. Mazo Exact matched filter bound for two-beam Rayleigh fading , 1991, IEEE Trans. Commun..

[6]  N. Seshadri,et al.  Multi-level block coded modulations for the Rayleigh fading channel , 1991, IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record.

[7]  J. Salz,et al.  A unified theory of data-aided equalization , 1981, The Bell System Technical Journal.

[8]  G. Ungerboeck,et al.  Adaptive Maximum-Likelihood Receiver for Carrier-Modulated Data-Transmission Systems , 1974, IEEE Trans. Commun..

[9]  J. E. Mazo,et al.  Faster than Nyquist Signaling: Algorithms to Silicon , 2014 .

[10]  Alexandra Duel-Hallen,et al.  Delayed decision-feedback sequence estimation , 1989, IEEE Trans. Commun..

[11]  Gottfried Ungerboeck,et al.  Channel coding with multilevel/phase signals , 1982, IEEE Trans. Inf. Theory.

[12]  G. David Forney,et al.  Maximum-likelihood sequence estimation of digital sequences in the presence of intersymbol interference , 1972, IEEE Trans. Inf. Theory.

[13]  Lee-Fang Wei Coded M-DPSK with built-in time diversity for fading channels , 1993, IEEE Trans. Inf. Theory.

[14]  P. Balaban,et al.  Dual diversity combining and equalization in digital cellular mobile radio , 1991 .

[15]  Kenneth Steiglitz,et al.  Suppression of Near- and Far-End Crosstalk by Linear Pre- and Post-Filtering , 1992, IEEE J. Sel. Areas Commun..

[16]  Fumiyuki Adachi,et al.  Combined effects of phase sweeping transmitter diversity and channel coding , 1992 .

[17]  A. Wittneben Basestation modulation diversity for digital simulcast , 1991, [1991 Proceedings] 41st IEEE Vehicular Technology Conference.