Reference signal generation technique

A computer program product comprising program code portions for generating a reference signal for use in a communication system in which for reference signal generation multiple base sequences are defined, when the computer program product is executed on a computing device, the computing device:

• generates a first reference signal sequence from a first base sequence;
• generates a second reference signal sequence from a second base sequence;
• and
• generates a reference signal comprising the first reference signal sequence and the second reference signal sequence, the first reference signal sequence occupies a first spectral fragment of the reference signal and the second reference signal sequence occupies a second spectral fragment of the reference signal, the second spectral fragment and the first spectral fragment do not overlap.

A communication system comprising:

• at least one of an apparatus and a user terminal for generating a reference signal for use in the communication system in which for reference signal generation multiple base sequences are defined, the at least one of the apparatus and the user terminal including:
• a sequence generator configured to generate a first reference signal sequence from a first base sequence and a second reference signal sequence from a second base sequence;
• and
• a reference signal generator configured to generate a reference signal comprising the first reference signal sequence and the second reference signal sequence, the first reference signal sequence occupies a first spectral fragment of the reference signal and the second reference signal sequence occupies a second spectral fragment of the reference signal, and the second spectral fragment and the first spectral fragment are spectrally located immediately adjacent to one another and do not spectrally overlap;
• and
• at least one of a second apparatus and a base station for performing channel estimation based on a reference signal in a communication system in which for reference signal generation multiple base sequences are defined, the at least one of the second apparatus and the base station including:
• a receiver configured to receive a reference signal comprising a first reference signal sequence generated from a first base sequence and a second reference signal sequence generated from a second base sequence, the first reference signal sequence occupies a first spectral fragment of the reference signal and the second reference signal sequence occupies a second spectral fragment of the reference signal, and the second spectral fragment and the first spectral fragment are spectrally located immediately adjacent to one another and do not spectrally overlap;
• and
• a channel estimator configured to perform channel estimation based on the received reference signal and based on at least one of the first reference signal sequence and the second reference signal sequence.