Non-square quadrature amplitude modulation in wireless communication systems
AssigneeQUALCOMM Incorporated
InventorsDaniel Paz, Idan Michael Horn, Assaf Touboul
Life of this patent
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Abstract
A UE of a wireless communication network first receives a modulation and coding scheme index IMCS for demodulating a physical layer data channel of the network. The UE then demodulates the physical layer data channel with a non-square quadrature amplitude modulation (NS-QAM) having a modulation order and code rate corresponding to a spectral efficiency (SPEFF) substantially equal to a SPEFF of a square QAM (S-QAM) SPEFF indicted by the IMCS, where the NS-QAM has an effective channel code rate no larger than the code rate for which the UE may skip decoding a transport block in an initial received transmission.
Claims28
A method for wireless communication, comprising:
- first receiving, by a user equipment (UE) of a wireless communication network, a modulation and coding scheme index IMCS for demodulating a physical layer data channel of the network;
- and
- demodulating, by the UE, the physical layer data channel with a non-square quadrature amplitude modulation (NS-QAM) having a modulation order and code rate corresponding to a spectral efficiency (SPEFF) substantially equal to a SPEFF of a square QAM (S-QAM) SPEFF indicted by the IMCS, where the NS-QAM has an effective channel code rate no larger than the code rate for which the UE may skip decoding a transport block in an initial received transmission.
A user equipment (UE) for wireless communication, comprising:
- a memory;
- and
- at least one processor coupled to the memory, the memory including instructions executable by the at least one processor to cause the UE to:
- first receive a modulation and coding scheme index IMCS for demodulating a physical layer data channel of a wireless network;
- and
- demodulate the physical layer data channel with a non-square quadrature amplitude modulation (NS-QAM) having a modulation order and code rate corresponding to a spectral efficiency (SPEFF) substantially equal to a SPEFF of a square QAM (S-QAM) SPEFF indicted by the IMCS, where the NS-QAM has an effective channel code rate no larger than the code rate for which the UE may skip decoding a transport block in an initial received transmission.
A non-transitory computer-readable medium storing processor-executable code, the code when read and executed by at least one processor of a user equipment (UE), causes the UE to:
- first receive a modulation and coding scheme index IMCS for demodulating a physical layer data channel of a wireless network;
- and
- demodulate the physical layer data channel with a non-square quadrature amplitude modulation (NS-QAM) having a modulation order and code rate corresponding to a spectral efficiency (SPEFF) substantially equal to a SPEFF of a square QAM (S-QAM) SPEFF indicted by the IMCS, where the NS-QAM has an effective channel code rate no larger than the code rate for which the UE may skip decoding a transport block in an initial received transmission.
An apparatus for wireless communications, comprising:
- means for first receiving, by a user equipment (UE) of a wireless communication network, a modulation and coding scheme index IMCS for demodulating a physical layer data channel of the network;
- and
- means for demodulating, by the UE, the physical layer data channel with a non-square quadrature amplitude modulation (NS-QAM) having a modulation order and code rate corresponding to a spectral efficiency (SPEFF) substantially equal to a SPEFF of a square QAM (S-QAM) SPEFF indicted by the IMCS, where the NS-QAM has an effective channel code rate no larger than the code rate for which the UE may skip decoding a transport block in an initial received transmission.
Dependencies are inferred from the claim text.