1. A method comprising:
modulating, at a first wireless device, a first signal based on a Gaussian minimum shift keying (GMSK) modulation scheme to generate a modulated signal;
amplifying, at the first wireless device, the modulated signal using a nonlinear power amplifier to generate an output signal; and
transmitting, from the first wireless device to a second wireless device, the output signal via a wireless local area network (WLAN) that is compliant with an Institute of Electrical and Electronics Engineer (IEEE) 802.11ah specification.
2. The method of claim 1, wherein the output signal is transmitted using a single carrier of the WLAN.
3. The method of claim 1, further comprising:
encoding, at the first wireless device, an input signal using a binary convolutional codes (BCC) encoder to generate the first signal, wherein the input signal corresponds to one or more packets, wherein the BCC encoder is configured to encode signals that are to be modulated using the GMSK modulation scheme and to encode signals that are to be modulated using an orthogonal frequency-division multiplexing (OFDM) modulation scheme.
4. The method of claim 1, wherein the GMSK modulation scheme has a modulation index of 0.5.
5. The method of claim 1, wherein the GMSK modulation scheme is identified as a mandatory modulation scheme of the WLAN by the IEEE 802.11ah specification.
6. The method of claim 1, further comprising:
encoding a second input signal using a binary convolutional codes (BCC) encoder to generate a second input signal;
modulating a second signal based on a orthogonal frequency-division multiplexing (OFDM) modulation scheme to generate a second modulated signal;
amplifying the second modulated signal using a linear power amplifier to generate a second output signal; and
transmitting, from the first wireless device to a third wireless device, the second output signal via the WLAN.
7. A method comprising:
receiving, at a wireless device, a signal via a wireless local area network (WLAN) that is compliant with an Institute of Electrical and Electronics Engineer (IEEE) 802.11ah specification;
when the received signal is modulated based on a Gaussian minimum shift keying (GMSK) modulation scheme:
demodulating, at the wireless device, the received signal using a GMSK demodulator to generate a first signal; and
decoding, at the wireless device, the first signal using a binary convolutional codes (BCC) decoder to generate an output signal, wherein the output signal corresponds to one or more packets;
when the received signal is modulated based on a orthogonal frequency-division multiplexing (OFDM) modulation scheme:
demodulating, at the wireless device, the received signal using an OFDM demodulator to generate the first signal; and
decoding, at the wireless device, the first signal using the BCC decoder to generate the output signal.
8. The method of claim 7, wherein the received signal is transmitted using a single carrier of the WLAN.
9. An apparatus comprising:
a modulator configured to modulate a first signal based on a Gaussian minimum shift keying (GMSK) modulation scheme to generate a modulated signal;
a nonlinear power amplifier configured to amplify the modulated signal to generate an output signal; and
a transmitter configured to transmit the output signal generated based on the amplified signal via a wireless local area network (WLAN) that is compliant with an Institute of Electrical and Electronics Engineer (IEEE) 802.11ah specification.
10. The apparatus of claim 9 further comprising:
a binary convolutional codes (BCC) encoder configured to encode an input signal to generate the first signal, wherein the input signal corresponds to one or more packets.
11. The apparatus of claim 10, wherein the BCC encoder is configured to encode a second input signal to generate a second signal, the apparatus further comprising:
a second modulator configured to modulate the second signal based on an orthogonal frequency-division multiplexing (OFDM) modulation scheme to generate a second modulated signal; and
a linear power amplifier configured to amplify the second modulated signal to generate a second output signal.
12. The apparatus of claim 9, wherein the GMSK modulation scheme is identified as a mandatory modulation scheme of the WLAN by the IEEE 802.11ah specification.
13. An apparatus comprising:
a receiver configured to receive a signal via a wireless local area network (WLAN) that is compliant with an Institute of Electrical and Electronics Engineer (IEEE) 802.11ah specification; and
a Gaussian minimum shift keying (GMSK) demodulator configured to demodulate the received signal based on a GMSK demodulation scheme to generate a first signal when the received signal is modulated based on a GMSK modulation scheme;
an orthogonal frequency-division multiplexing (OFDM) demodulator configured to demodulate the received signal based on a OFDM demodulation scheme to generate the first signal when the received signal is modulated based on an OFDM modulation scheme; and
a binary convolutional codes (BCC) decoder configured to decode the first signal to generate an output signal, wherein the output signal corresponds to one or more packets.
14. The apparatus of claim 13, wherein the received signal is transmitted using a single carrier of the WLAN.
15. An apparatus comprising:
means for modulating a first signal based on a Gaussian minimum shift keying (GMSK) modulation scheme to generate a modulated signal;
means for amplifying the modulated signal nonlinearly to generate an output signal; and
means for transmitting the output signal generated via a wireless local area network (WLAN) that is compliant with an Institute of Electrical and Electronics Engineer (IEEE) 802.11ah specification.
16. The apparatus of claim 15 further comprising:
means for encoding, wherein the means for encoding is configured to:
encode an input signal based on a binary convolutional codes (BCC) encoding scheme to generate the first signal, wherein the input signal corresponds to one or more packets; and
encode a second input signal to generate a second signal;
second means for modulating a second signal based on an orthogonal frequency-division multiplexing (OFDM) modulation scheme to generate a second modulated signal; and
second means for amplifying the second modulated signal linearly to generate a second output signal, wherein the second output signal is transmitted via the WLAN.
17. An apparatus comprising:
means for receiving a signal via a wireless local area network (WLAN) that is compliant with an Institute of Electrical and Electronics Engineer (IEEE) 802.11ah specification;
first means for demodulating the received signal, wherein the first means for demodulating is configured to demodulate the received signal based on a Gaussian minimum shift keying (GMSK) demodulation scheme to generate a first signal when the received signal is modulated based on a GMSK modulation scheme:
second means for demodulating the received signal, wherein the second means for demodulating is configured to demodulate the received signal based on an Orthogonal frequency-division multiplexing (OFDM) demodulation scheme to generate the first signal when the received signal is modulated based on an OFDM modulation scheme; and
means for decoding the first signal based on a binary convolutional codes (BCC) decoding scheme to generate an output signal.
18. A non-transitory computer readable medium comprising processor-executable instructions that, when executed by a processor, cause the processor to perform operations comprising:
modulating, at a first wireless device, a first signal based on a Gaussian minimum shift keying (GMSK) modulation scheme to generate a modulated signal;
amplifying, at the first wireless device, the modulated signal using a nonlinear power amplifier to generate an output signal; and
transmitting, from the first wireless device to a second wireless device, an output signal generated based on the modulated signal via a wireless local area network (WLAN) that is compliant with an Institute of Electrical and Electronics Engineer (IEEE) 802.11ah specification.
19. The non-transitory computer readable medium of claim 18, wherein the operations further comprise:
encoding, at the first wireless device, an input signal using a binary convolutional codes (BCC) encoder to generate the first signal, wherein the input signal corresponds to one or more packets, wherein the BCC encoder is configured to encode signals that are to be modulated using the GMSK modulation scheme and signals that are to be modulated using an orthogonal frequency-division multiplexing (OFDM) modulation scheme.
20. A non-transitory computer readable medium comprising processor-executable instructions that, when executed by a processor, cause the processor to perform operations comprising:
receiving, at a wireless device, a signal via a wireless local area network (WLAN) that is compliant with an Institute of Electrical and Electronics Engineer (IEEE) 802.11ah specification;
when the received signal is modulated based on a Gaussian minimum shift keying (GMSK) modulation scheme:
demodulating, at the wireless device, the received signal using a GMSK demodulator to generate a first signal; and
decoding, at the wireless device, the first signal using a binary convolutional codes (BCC) decoder to generate an output signal, wherein the output signal corresponds to one or more packets;
when the received signal is modulated based on a Orthogonal frequency-division multiplexing (OFDM) modulation scheme:
demodulating, at the wireless device, the received signal using an OFDM demodulator to generate the first signal; and
decoding, at the wireless device, the first signal using the BCC decoder to generate the output signal.
21. A method comprising:
generating, at a wireless device, a Gaussian minimum shift keying (GMSK) modulated packet to be transmitted through a wireless local area network (WLAN) that is compliant with an Institute of Electrical and Electronics Engineer (IEEE) 802.11ah specification, wherein the packet includes:
a preamble, wherein the preamble includes a synchronization (SYNC) field and a start frame delimiter (SFD) field;
a header portion, wherein the header portion includes a length field and a cyclic redundancy check (CRC) field; and
a payload portion.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1.-4. (canceled)
5. A hearing apparatus, comprising:
a first coil an for inductive transmission;
a second coil for inductive transmission arranged orthogonal to the first coil;
a third coil for inductive transmission arranged orthogonal to the first oil and to the second coil;
an evaluation circuit connected to all three coils, wherein in the evaluation circuit, all the coil signals with the same sign are summed for a first output signal and two of the three coil signals with the same sign and the third coil signal with the other sign respectively are summed for a second, third and fourth output signal, with the third coil signal for the second output signal being assigned to the first coil, for the third output signal to the second coil and for the fourth output signal to the third coil, and wherein the output signal which exhibits the highest level of the four output signals is selected by the evaluation circuit for further processing.
6. The hearing apparatus as claimed in claim 5, wherein the evaluation circuit allows a smooth cross-fading between the output signals.
7. The hearing apparatus as claimed in claim 5, wherein a changeover from one of the output signals to another output signal is made in the evaluation circuit based upon a hysteresis.
8. The hearing apparatus as claimed in claim 5, wherein the orthogonal coils and the evaluation circuit are incorporated in a remote controller and the selected output signal is transmitted to a hearing device.
9. A hearing device, comprising:
a first coil for an inductive transmission for a first coil signal;
a second coil for an inductive transmission for a second coil signal;
a third coil for an inductive transmission for a third coil signal;
an evaluation device to evaluate the coil signals, wherein:
in a first evaluation the first coil signal, the second coil signal and the third coil signal are added,
in a second evaluation the second coil signal and the third coil signal are subtracted from the first coil signal,
in a third evaluation the first coil signal is added to the second coil signal, wherein the third coil signal is subtracted,
in a fourth evaluation the first coil signal is added to the third coil signal, wherein the second coil signal is subtracted.
10. The hearing device as claimed in claim 9, wherein:
a first output signal is based upon the result of the first evaluation,
a second output signal is based upon the result of the second evaluation
a third output signal is based upon the result of the third evaluation
a fourth output signal is based upon the result of the fourth evaluation, and
wherein the output signal with the highest level of the four output signals is selected for further processing.
11. The hearing device as claimed in claim 9, wherein the first coil, the second coil and the third coil are arranged orthogonal to one another.
12. The hearing device as claimed in claim 9, wherein the hearing device is a headset.
13. The hearing device as claimed in claim 9, wherein the hearing device is a earphone.
14. The hearing device as claimed in claim 9, wherein the hearing device is a hearing apparatus.
15. The hearing device as claimed in claim 14, wherein the first coil, the second coil and the third coil are telecoils.
16. A method for generating a signal for a hearing apparatus, comprising:
measuring a first coil signal from a first coil of the hearing apparatus;
measuring a second coil signal from a second coil of the hearing apparatus;
measuring a third coil signal from a third coil of the hearing apparatus;
adding the first coil signal to the second coil signal and adding the third coil signal in a first evaluation;
subtracting the second coil signal and the third coil signal from the first coil signal in a second evaluation;
adding the first coil signal to the second coil signal and subtracting the third coil signal in a third evaluation; and
adding the first coil signal to the third coil signal and subtracting the second coil signal in a fourth evaluation.
17. The method as claimed in claim 16, wherein the four evaluations result in four values, and wherein the highest value is selected for a further processing.
18. The hearing apparatus as claimed in claim 17, wherein a cross-fading is used when the selection is changing.
19. The hearing apparatus as claimed in claim 17, wherein a changeover from one evaluation result to another evaluation result is made based upon a hysteresis.