New Trellis Code Design for Spatial Modulation

Abstract

Email\ud Print\ud Request Permissions\ud Spatial modulation (SM), in which multiple antennas are used to convey information besides the conventional M-ary signal constellations, is a new multiple-input multiple-output (MIMO) transmission technique, which has recently been proposed as an alternative to V-BLAST (vertical Bell Labs layered space-time). In this paper, a novel MIMO transmission scheme, called spatial modulation with trellis coding (SM-TC), is proposed. Similar to the conventional trellis coded modulation (TCM), in this scheme, a trellis encoder and an SM mapper are jointly designed to take advantage of the benefits of both. A soft decision Viterbi decoder, which is fed with the soft information supplied by the optimal SM decoder, is used at the receiver. A pairwise error probability (PEP) upper bound is derived for the SM-TC scheme in uncorrelated quasi-static Rayleigh fading channels. From the PEP upper bound, code design criteria are given and then used to obtain new 4-, 8- and 16-state SM-TC schemes using quadrature phase-shift keying (QPSK) and 8-ary phase-shift keying (8-PSK) modulations for 2,3 and 4 bits/s/Hz spectral efficiencies. It is shown via computer simulations and also supported by a theoretical error performance analysis that the proposed SM-TC schemes achieve significantly better error performance than the classical space-time trellis codes and coded V-BLAST systems at the same spectral efficiency, yet with reduced decoding complexity

Single-Carrier SM-MIMO: A Promising Design for Broadband Large-Scale Antenna Systems

“…have been widely studied during the last two decades 33 and have been incorporated into most of the recent commu- 34 nication standards [1], [2] due to their benefits of providing 35 diversity, and/or multiplexing gains [3]- [5]. However, in order 36 to satisfy the ever-growing demands for higher capacity, larger 37 coverage area and better reliability, further improved MIMO 38 transceivers should be designed [6].…”

Antenna Selection in Spatial Modulation Systems

“…W HEN considering a Spatial Modulation (SM) system [1]- [4] having N r receive and N t transmit antennas, which relies on a single RF chain at the transmitter, we have the system model of y = √ ρh i s + n, where y ∈ C Nr is the received signal vector, ρ is the average Signal-to-Noise Ratio (SNR) at each receive antenna, s is a random symbol selected from a unit-energy M -QAM or -PSK signal set represented by S, h i is the channel vector corresponding to the i th transmit antenna, and n ∈ C Nr is the noise vector. The entries of both n and of the channel matrix H obey the circularly symmetric complex-valued Gaussian distribution CN (0, 1).…”

Low-complexity soft-decision aided detectors for coded spatial modulation MIMO systems

“…Recently, to reduce the impact of channel fading and noise on bit error ratio (BER) performance, SM-MIMO systems with powerful channel coding, such as turbo codes and low-density parity-check (LDPC) codes, have gained rekindled interests [10][11][12][13]. A novel trellis coded spatial modulation (TCSM) scheme was proposed in [10], where the concept of trellis coded modulation was applied to the spatial constellation of SM systems.…”

“…While it achieves better performance than that of uncoded SM system over correlated channels, it performs even worse in uncorrelated channels. To circumvent the problem, a novel MIMO transmission scheme was developed in [11], where a trellis encoder and a SM mapper are jointly designed to take advantage of the benefits of both. In [12], the authors designed a spectral efficiency transmission scheme, labeled as bit-interleaved coded spatial modulation (BICSM) with iterative demodulating/decoding, which provides substantial performance gains in all channel conditions.…”