TECHNIQUE FOR GENERATING AN SC-FDMA SIGNAL
First Claim
1. A method of generating a Single-Carrier Frequency Division Multiple Access, or SC-FDMA, signal based on a given Constant Amplitude Zero Auto-Correlation, or CAZAC, sequence, the method comprising:
- generating a frequency domain representation of the CAZAC sequence, comprising;
providing an analytical representation of the CAZAC sequence in the frequency domain with an integer phase term; and
calculating the integer phase term in a recursive manner for each of a plurality of frequency domain samples of the CAZAC sequence;
mapping the resulting frequency domain representation of the CAZAC sequence to a pre-determined frequency location; and
transforming the mapped frequency domain representation into the time domain to obtain a time domain representation of the SC-FDMA signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A technique for generating a Single-Carrier Frequency Division Multiple Access (SC-FDMA) signal based on a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence is disclosed. A method embodiment of this technique comprises generating a frequency domain representation of the CAZAC sequence by providing an analytical representation of the CAZAC sequence in the frequency domain with an integer phase term and calculating the integer phase term in a recursive manner for each of a plurality of frequency domain samples of the CAZAC sequence. The resulting frequency domain representation of the CAZAC sequence is then mapped to a predetermined frequency location before being transformed into the time domain to obtain a time domain representation of the SC-FDMA signal. The SC-FDMA signal may be a random access signal for transmission on a Physical Random Access Channel (PRACH).
-
Citations
17 Claims
-
1. A method of generating a Single-Carrier Frequency Division Multiple Access, or SC-FDMA, signal based on a given Constant Amplitude Zero Auto-Correlation, or CAZAC, sequence, the method comprising:
-
generating a frequency domain representation of the CAZAC sequence, comprising; providing an analytical representation of the CAZAC sequence in the frequency domain with an integer phase term; and calculating the integer phase term in a recursive manner for each of a plurality of frequency domain samples of the CAZAC sequence; mapping the resulting frequency domain representation of the CAZAC sequence to a pre-determined frequency location; and transforming the mapped frequency domain representation into the time domain to obtain a time domain representation of the SC-FDMA signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A device (20) for generating a Single-Carrier Frequency Division Multiple Access, or SC-FDMA, signal based on a given Constant Amplitude Zero Auto-Correlation, or CAZAC, sequence, the device comprising:
-
a generator (24) adapted to generate a frequency domain representation of the CAZAC sequence based on an analytical representation of the CAZAC sequence in the frequency domain with an integer phase term, wherein the generator calculates the integer phase term in a recursive manner for each of a plurality of frequency domain samples of the CAZAC sequence; a mapper (26) adapted to map the resulting frequency domain representation of the CAZAC sequence to a pre-determined frequency location; and a transformator (28) adapted to transform the mapped frequency domain representation into the time domain to obtain a time domain representation of the SC-FDMA signal. - View Dependent Claims (16, 17)
-
Specification