Dual-mode ultra wideband and wireless local area network communications
DCFirst Claim
1. A dual-mode ultra wideband and wireless local area network transceiver comprising:
- a digital lowpass-shaping finite impulse response filter system coupled to a ultra wideband multichannel pseudorandom noise sequence mapping or a wireless local area network inverse fast Fourier transform and in-phase/quadrature modulation;
a dual-mode sampling frequency rate coupled to a digital-to-analog converter, said digital lowpass shaping filter system coupled to said digital to analog converter;
a switch to connect from the ultra wideband multichannel pseudorandom noise sequence mapping or the wireless local area network inverse fast Fourier transform and in-phase/quadrature modulation to the digital lowpass-shaping filter system.
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Abstract
A dual-mode ultra wideband (UWB) and wireless local area network (WLAN) communication transceiver is used to implement two disparate systems of UWB and WLAN communications within a single device. During the UWB mode, the communication transceiver sends and receives the UWB signal at very-high data rate with a relative short transmission range. During the WLAN mode, the communication transceiver sends and receives the WLAN signal at a relative low data rate, but with a longer transmission range. Thereby, trade-off benefits of the dual-mode UWB and WLAN communication transceiver can be mutually utilized to achieve seamless wireless broadband communications between two different standards.
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Citations
23 Claims
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1. A dual-mode ultra wideband and wireless local area network transceiver comprising:
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a digital lowpass-shaping finite impulse response filter system coupled to a ultra wideband multichannel pseudorandom noise sequence mapping or a wireless local area network inverse fast Fourier transform and in-phase/quadrature modulation; a dual-mode sampling frequency rate coupled to a digital-to-analog converter, said digital lowpass shaping filter system coupled to said digital to analog converter; a switch to connect from the ultra wideband multichannel pseudorandom noise sequence mapping or the wireless local area network inverse fast Fourier transform and in-phase/quadrature modulation to the digital lowpass-shaping filter system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A dual-mode ultra wideband and wireless local area network multichannel-based multi-carrier system comprising:
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a digital-to-analog converter coupled to an analog lowpass filter that is connected to a mixer; the mixer coupled to a power amplifier; a ultra wideband selectable multicarrier frequencies connected to a ultra wideband commuter unit in which contains a ultra wideband switch; a wireless local area network lower-band selectable multicarrier frequencies coupled to a lower-band wireless local area network commuter unit in which contains a lower-band switch; a wireless local area network upper-band selectable multicarrier frequencies coupled to a upper-band wireless local area network commuter unit in which contains a upper-band switch; and a software control unit selects one of outputs from the ultra wideband commuter unit, the lower-band wireless local area network commuter unit or the upper-band wireless local area network commuter unit to the mixer by controlling MUX (multiplexer) units. - View Dependent Claims (11, 12, 13)
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14. A dual-mode ultra wideband and wireless local area network communication receiver comprising:
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an analog-to-digital converter to provide information to a digital receiver filter system; a pre-switch to provide information to a rake receiver or to an in-phase/quadrature demodulation; the digital receiver filter system to provide information to the pre-switch; the rake receiver coupled to a de-spreading of pseudorandom noise sequence and de-mapping; the in-phase/quadrature demodulation coupled to a fast Fourier transform mapping unit; a post-switch to provide information to a block de-interleaver; and the de-spreading of pseudorandom noise sequence and de-mapping or the fast Fourier transform mapping unit to provide information to the post-switch. - View Dependent Claims (15, 16, 17)
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18. An article comprising a medium for storing instructions that cause a digital signal processor-based dual-mode ultra wideband and wireless local area network communication system to:
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Selectively set a sampling frequency rate for a digital-to-analog converter during an ultra wideband transmitter mode or during a wireless local area network transmitter mode; Selectively set a connection with ultra wideband multichannel pseudorandom noise sequence mapping or a connection with wireless local area network in-phase/quadrature modulation and inverse fast Fourier transform during either the ultra wideband transmitter mode or during the wireless local area network transmitter mode; Selectively set a digital lowpass-shaping transmitter filter for the ultra wideband or for the wireless local area network during either the ultra wideband transmitter mode or during the wireless local area network transmitter mode; Selectively set a use of the multicarrier of the ultra wideband or of the lower and upper wireless local area network during either the ultra wideband transmitter mode or during the wireless local area network transmitter mode; Selectively set the connection with ultra wideband rake receiver or wireless local area network image/quadrature demodulation and fast Fourier transform; and Selectively set an indoor ultra wideband digital finite impulse response lowpass shaping filter for an indoor ultra wideband operation or an outdoor ultra wideband digital finite impulse response lowpass shaping filter for the outdoor ultra wideband operation. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification