Improved Balanced 2-PSK STTCs for Several Transmit Antennas from a New and General Design Method

Optimal Generation of Space-Time Trellis Codes via Coset Partitioning

Criteria to design good space-time trellis codes (STTCs) have been already developed in previous publications. However, the computation of the best STTCs is time-consuming because a long exhaustive or systematic computing search is required, especially for a high number of states and/or transmit antennas. In order to reduce the search time, an efficient method must be employed to generate the S...

New Efficient Method to Generate Optimal 2-PSK STTCs with a Large Number of Transmit Antennas

In this paper, we propose a new method called coset partitioning to generate easily and efficiently the best space-time trellis codes (STTCs), thereby reducing considerably the usual important search time. This method, used in the case of 2-PSK STTCs, is an extension of the set partitioning proposed by Ungerboeck based on the coset and lattice Calderbank’s approach. The main guideline of the co...

QPSK Balanced Space Time Trellis Codes

All the best known space-time trellis codes (STTCs) belong to the Balanced STTCs class. The first method to design balanced STTCs is proposed in this letter. The exhaustive code search of optimal codes can then be reduced to this class. Finally, the proposed method is used to construct new QPSK codes for 3 and 4 transmit antennas which outperform the best previously published codes of the same ...

A general construction of space-time trellis codes for PSK signal sets

The diversity order and coding gain are crucial for the performance of a multiple antenna communication system. It is known that Space-Time Trellis Codes (STTC) can be used to achieve the above objectives. In particular we can use STTCs to obtain large coding gains. Many attempts have been made to construct STTCs which achieve full-diversity and good coding gains, though a general method of con...

New Method to Generate Balanced 2 n - PSK STTCs