US 8,265,122 B2Granted

Receiver

AssigneeRenesas Electronics Corporation

InventorsTatsuo Nakagawa, Ryosuke Fujiwara, Masayuki Miyazaki, Goichi Ono

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Abstract

With the objective of enhancing receiving performance of a receiver with respect to pulse signals spread by spread codes, the receiver comprises an RF front-end section which performs amplification, an AD converter section which AD-converts signals outputted from the RF front-end section, a baseband section which inversely spreads the output of the AD converter section and performs signal detection and demodulation thereon, a reception environment measuring section which measures reception environment using the input signals of the baseband section, and a parameter setting section which sets parameters for respective parts on the basis of signals outputted from the reception environment measuring section. The parameter setting section sets the parameters for the respective parts to the optimum according to the environmental condition measured by the reception environment measuring section.

Claims20

Dependent claims

A receiver that receives each of pulse signals spread by spread codes, comprising:

an RF front-end section which performs filtering and amplification on each received signal;
an AD converter section which analog-digital converts signals outputted from the RF front-end section;
a baseband section which inversely spreads the output of the AD converter section and performs signal detection and demodulation thereon;
a reception environment measuring section which measures reception environment constituted by components of the receiver using signals inputted to the baseband section;
RF front-end, the AD converter and the baseband section of the receiver;
and
a mode controller for controlling operation modes of the baseband section, the AD converter section, the reception environment measuring section, and the parameter setting section, and
a parameter register for storing the set parameters of the parameter setting section,
wherein the baseband section includes plural blocks and control circuit units provided in each of the respective blocks,
wherein, in the operation modes, there are a standby state mode, an initial setting mode, and a data reception mode,
wherein, when the initial setting mode, the reception environments are measured by the reception environment measuring section using signals inputted to the baseband section prior to a start of a receiving operation of receiving said each of pulse signals;
wherein parameters for each section of the receiver are set on the basis of output signals of the reception environment measuring section;
wherein, when the receiver enters the data reception mode, said pulse signals are received, and
wherein operating/non-operating states of the respective blocks in the baseband section are respectively controlled by control circuit units provided in each of the respective blocks according to the operation modes.

11 more elements

A receiver that receives each of pulse signals spread by spread codes, comprising:

an RF front-end section which performs filtering and amplification on each received signal;
an AD converter section which analog-digital converts signals outputted from the RF front-end section;
a baseband section which inversely spreads the output of the AD converter section and performs signal detection and demodulation thereon;
a reception environment measuring section which measures reception environment constituted by components of the receiver using signals inputted to the baseband section;
a parameter setting section which sets parameters for the RF front-end, the AD converter section and the baseband section of the receiver;
a mode controller for controlling operation modes of the baseband section, the AD converter section, the reception environment measuring section, and the parameter setting section, and
a parameter register for storing the set parameters of the parameter setting section,
wherein the baseband section includes plural blocks and control circuit units provided in each of the respective blocks,
wherein, in the operation modes, there are a standby state mode, an initial setting mode, and a data reception mode,
wherein the mode controller set the receiver into the receiver standby state mode in usual,
wherein, when a signal is inputted from outside in the standby state, the mode controller set the receiver into the initial setting mode and reception environments are measured by the reception environment measuring section using signals inputted to the baseband section, and parameters for each section of the receiver are set on the basis of output signals of the reception environment measuring section, then, the mode controller set the receiver into the data reception mode for receiving said pulse signals,
wherein, when the data reception is completed, the receiver is set into the standby mode again, and
wherein operating/non-operating states of the respective blocks in the base section are respectively controlled by control circuit units provided in each of the respective blocks according to the operation modes.

10 more elements

A receiver that receives each of pulse signals spread by spread codes, comprising:

an RF front-end section which performs filtering and amplification on each received signal;
an AD converter section which analog-digital converts signals outputted from the RF front-end section;
a baseband section which inversely spreads the output of the AD converter section and performs signal detection and demodulation thereon;
a reception environment measuring section which measures reception environment constituted by components of the receiver using signals inputted in the baseband section;
a parameter setting section which sets parameters for the RF front-end, the AD converter section and the baseband section of the receiver;
a mode controller for controlling operation modes of the baseband section, the AD converter section, the reception environment measuring section, and the parameter setting section;
and
a parameter register for storing the set parameters of the parameter setting section,
wherein the baseband section includes plural blocks and control circuit units provided in each of the respective blocks,
wherein, in the operation modes, there are a standby state mode, a parameter setting during an initial setting mode, and a data reception mode for receiving transmitted data,
wherein the mode controller set the receiver into the initial setting mode and reception environments are measured by the reception environment measuring section using signals inputted to the baseband section, and parameters for each section of the receiver are set on the basis of output signals of the reception environment measuring section, then the mode controller set the receiver into the standby state mode,
wherein, when a signal is inputted from outside in the standby state, the mode controller set the receiver into the data reception mode,
wherein, when the data reception is completed, the receiver is set into the standby mode again, and
wherein operating/non-operating states of the respective blocks in the baseband section are respectively controlled by control circuit units provided in each of the respective blocks according to the operation modes.

11 more elements

Dependencies are inferred from the claim text.