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The problem of multichannel estimation for space-time coded transmissions over frequency-selective Rayleigh fading channels is addressed. Under fast fading conditions, receivers employing Kalman filtering and moderate complexity equalization schemes are proposed for both space-time block codes (STBCs) and space-time trellis codes (STTCs). Simulation results(More)
In this work, modulation diversity is exploited for two way relay channel through which multiple sources transmit information to each other. Under a basic framework with two sources and a single relay, a system applying modulation diversity technique together with decode-and-forward (DF) and amplify-and-forward (AF) protocols is proposed. The performance of(More)
In wireless networks, coded cooperation is a way of realizing uplink transmit diversity at the mobile user with single antenna. In this work, in order to increase the power and bandwidth efficiency, a multilevel coded cooperative system using orthogonal signalling is proposed. Orthogonal signalling not only enables transmission of both users data in single(More)
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