Distributed Space-Time Coding in Wireless Relay Networks
IEEE Transactions on Wireless Communications
Burst-Based Orthogonal ST Block Coding for CPM
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
A decomposition approach to CPM
IEEE Transactions on Information Theory
Orthogonal designs with maximal rates
IEEE Transactions on Information Theory
An orthogonal space-time coded CPM system with fast decoding for two transmit antennas
IEEE Transactions on Information Theory
Cooperative communication in wireless networks
IEEE Communications Magazine
Space-time code design with continuous phase modulation
IEEE Journal on Selected Areas in Communications
Wireless Personal Communications: An International Journal
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The physical layer(s) of wireless robotics take advantage of current standards, like Bluetooth, Wifi, etc., each of them addressing a specific segment of wireless robotics. Wireless robotics has a wide range of needs, comprising low power, robustness and high data rate when video is used as well as the opportunity to use a large number of transceivers. To cover these needs and take benefit from these opportunities, we propose a new physical layer, based on continuous phase modulation (CPM) and space-time coding. CPM, already used in some standards like GSM and Bluetooth, enables the development of low power devices, but presents a low spectral efficiency. Space-time coding on the other hand yields high spectral efficiency as well as enhanced robustness against the wireless channel. Moreover, space-time coding can take benefit of the large number of transceivers using cooperative communications. In this paper, after analysing the opportunities given by wireless robotics as well as its specific needs, we propose a new physical layer based on L 2-orthogonality for non-linear space-time codes. L 2-orthogonality of our codes is ensured by a bank of phase correction functions, maintaining phase continuity, but at the same time enabling low complexity decoding. We show that the code achieves full diversity and has full rate, for any number of transmit/receive antennas and any CPM parameter.