Abstract
Trellis coded modulation (TCM) is a scheme that enhances the error performance without extra power not bandwidth. This paper presents a modified Super-Orthogonal Trellis-Coded Spatial Modulation (SOTC-SM) based on a cyclic structure of the Space Time Coding. The developed code benefits from expanded codebook of the Space Time Block Coded Spatial Modulation (STBC-SM) to enhance the coding gain. The set-partitioning and the code design based on the expanded codebook was given for codes with rate of 2 and 3 bps and can be easily extended to higher rates. The Bit-Error Rate (BER) performance of the proposed scheme was evaluated via computer simulation. It was shown that the proposed scheme outperforms the SOTC-SM performance for the same number of transmit antennas.
Highlights
There are increasing demands for high data rates in modern wireless communication systems
The scheme is called super orthogonal trellis coded spatial modulation (SOTC-SM) where it is proven by computer simulation that the bit error rate of the Super-Orthogonal Trellis-Coded Spatial Modulation (SOTC-SM) is significantly better than the SO-STBC for the same number of trellis states and transitions in expense of using higher number of transmit antennas
The Frame Error Rate (FER) performance of both schemes is evaluated through Monte Carlo Simulations for different spectral efficiencies, different number of transmit antennas, and/or different number of trellis states
Summary
There are increasing demands for high data rates in modern wireless communication systems. In [19], the set partitioning of SO-STTCs is applied to space-time block coded Spatial Modulation to construct super orthogonal trellis coded spatial modulation (SOTC-SM) It has been shown in [19] that SOTC-SM achieves significantly better bit error rate (BER) and frame error rate (FER) performance than SM-TC. Instead of using the cyclic structure of STBC-CSM proposed in [22] to increase the data rate, it is used in this paper to expand the codebook of the trellis space time coded spatial modulation. This allows for superior performance with less number of transmit antenna compared to the code introduced in [19].
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