초록 ▼

A system and method for reducing the interference experienced by sensitive electronic devices, such as hearing aids, operative in the vicinity of CDMA user communication devices. A transmitter of the communications device is configured to transmit signal power substantially continuously at a full ra

A system and method for reducing the interference experienced by sensitive electronic devices, such as hearing aids, operative in the vicinity of CDMA user communication devices. A transmitter of the communications device is configured to transmit signal power substantially continuously at a full rate power level irrespective of the variable data rate at which the transmitter would otherwise be operative. In a first embodiment, a variable rate vocoder within the transmitter is directed to perform full-rate vocoding, irrespective of an instantaneous level of user speech. In a second embodiment, a microprocessor builds full-rate frames using repeated versions of code symbols generated by the vocoder. In a third embodiment, the microprocessor builds full rate frames by generating signaling bits of a predetermined pattern to pad otherwise non-full frames.

대표청구항 ▼

[We claim:] [1.]means for directing said communication device to continuously transmit RF energy at a full rate power level irrespective of said variable rate; andmeans, in said communication device and responsive to said means for directing, for transmitting RF energy continuously at said full rate

[We claim:] [1.]means for directing said communication device to continuously transmit RF energy at a full rate power level irrespective of said variable rate; andmeans, in said communication device and responsive to said means for directing, for transmitting RF energy continuously at said full rate power level irrespective of said variable rate, whereby said interference is reduced proximate said communication device due to continuous transmission thereby at said full rate power level;wherein said communication device nominally transmits non-full frames of data containing a variable number of bits in response to said variable rate, and wherein said means for transmitting comprises:a controller for generating full frames of data containing a fixed number of bits irrespective of said variable rate; anda transmitter for transmitting said full frames of data at said full-rate power level; andwherein said communication device nominally distributes said variable number of bits pseudo-randomly in said non-full frames of data, and wherein said full frames of data generated by said controller contain a variable number of padding bits having a predetermined pattern.