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US 10,484,219 B2Granted
Tone-phase-shift keying: a new modulation scheme for SC-FDMA
AssigneeQUALCOMM Incorporated
InventorsXiao feng Wang, Junyi Li, Zhi-Zhong Yu
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Abstract
A method of wireless communication by a user equipment includes determining an allocation of a set of tones in a symbol for conveying data. The method further includes determining to use m-ary phase shift keying (MPSK) to modulate the data onto a subset of tones of the set of tones. The method further includes modulating the data onto the subset of tones based on a mapping, wherein the mapping maps pairs of data values with a largest Hamming distance from each other to pairs of constellation points with a maximum Euclidean distance from each other.
Claims20
A method of wireless communication, comprising:
- receiving a data transmission from a user equipment (UE);
- detecting a subset of tones having maximal energy of an allocated set of tones in a symbol;
- and
- demodulating each tone of the subset of tones to determine data based on a first constellation point and a mapping, wherein the mapping maps pairs of data values with a largest Hamming distance from each other to pairs of constellation points with a maximum Euclidean distance from each other,
- wherein the set of tones includes D tones, wherein the demodulating comprises demodulating using m-ary phase shift keying (MPSK) having M possible signal phases where k bits of data are modulated onto the subset of tones, and the mapping is between 2k possible data values and 2k constellation points of D*M constellation points, wherein D is a positive integer greater than 1, k is a positive non-zero integer, and M is a non-zero real number.
2 more elements
An apparatus for wireless communication, comprising:
- means for receiving a data transmission from a user equipment (UE);
- means for detecting a subset of tones having maximal energy of an allocated set of tones in a symbol;
- and
- means for demodulating each tone of the subset of tones to determine data based on a first constellation point and a mapping, wherein the mapping maps pairs of data values with a largest Hamming distance from each other to pairs of constellation points with a maximum Euclidean distance from each other,
- wherein the set of tones includes D tones, wherein the demodulating comprises demodulating using m-ary phase shift keying (MPSK) having M possible signal phases where k bits of data are modulated onto the subset of tones, and the mapping is between 2k possible data values and 2k constellation points of D*M constellation points, wherein D is a positive integer greater than 1, k is a positive non-zero integer, and M is a non-zero real number.
2 more elements
An apparatus for wireless communication, comprising:
- memory;
- at least one processor coupled to the memory and configured to:
- receive a data transmission from a user equipment (UE);
- detect a subset of tones having maximal energy of an allocated set of tones in a symbol;
- and
- demodulate each tone of the subset of tones to determine data based on a first constellation point and a mapping, wherein the mapping maps pairs of data values with a largest Hamming distance from each other to pairs of constellation points with a maximum Euclidean distance from each other,
- wherein the set of tones includes D tones, wherein the demodulating comprises demodulating using m-ary phase shift keying (MPSK) having M possible signal phases where k bits of data are modulated onto the subset of tones, and the mapping is between 2k possible data values and 2k constellation points of D*M constellation points, wherein D is a positive integer greater than 1, k is a positive non-zero integer, and M is a non-zero real number.
4 more elements
A non-transitory computer-readable medium storing computer executable code, comprising code for:
- receiving a data transmission from a user equipment (UE);
- detecting a subset of tones having maximal energy of an allocated set of tones in a symbol;
- and
- demodulating each tone of the subset of tones to determine data based on a first constellation point and a mapping, wherein the mapping maps pairs of data values with a largest Hamming distance from each other to pairs of constellation points with a maximum Euclidean distance from each other,
- wherein the set of tones includes D tones, wherein the demodulating comprises demodulating using m-ary phase shift keying (MPSK) having M possible signal phases where k bits of data are modulated onto the subset of tones, and the mapping is between 2k possible data values and 2k constellation points of D*M constellation points, wherein D is a positive integer greater than 1, k is a positive non-zero integer, and M is a non-zero real number.
2 more elements
Dependencies are inferred from the claim text.