Robert Baldemair

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In Long Term Evolution (LTE) specification, physical uplink control channel (PUCCH) consists of two basic transmission formats, i.e. formats 1a/1b and format 2, carrying some control signals fed back to eNodeB, e.g. ACK/NACK related to downlink data transmission blocks and downlink channel quality indicator (CQI). At eNodeB, conventional receiver detection(More)
Discrete multitone modulation allows for a simple receiver structure if the impulse response of the communication channel is shorter than the Cyclic Prefix. In ADSL, a Time-Domain Equalizer (TEQ) is used to fulfil this requirement. Without a TEQ, unwanted Intercarrier Interference (ICI) and Intersymbol Interference (ISI) occur. In this paper, quadratic(More)
In 3rd. Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, when no resources has been assigned in the uplink to a given UE (User Equipment), the ACK/NACK associated with the received packets are conveyed back to the LTE base station through the so-called Physical Uplink Control Channel (PUCCH). In PUCCH, the data streams transmitted by(More)
A method to enhance capacity in Discrete Multitone Transmission (DMT) systems is presented. This paper addresses the problem, how to reduce the transmit power spectral density (PSD) of the DMT signal in specific narrow frequency bands below a certain level. One example is VDSL signalling [1, 2] in the presence of amateur radio. Only a small amount of egress(More)