Extended bandwidth homePNA system compatible with homePNA 2.0
First Claim
1. An extended bandwidth HomePhoneline Network Alliance system, comprising:
- a transmitter configured to transmit an extended bandwidth signal, the extended bandwidth signal having a bandwidth greater than a bandwidth of a signal that conforms to the bandwidth limitations of a HomePhoneline Networking Alliance 2.0 specification, wherein the bandwidth of the extended bandwidth signal includes more than one and one half copies of a spectrum of a 4 Million symbols per second (Mbaud) signal.
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Abstract
An extended bandwidth HomePNA system uses a transmit spectrum having a greater bandwidth than the bandwidth specified by a HomePNA 2.0 communication standard. The extended bandwidth system of the invention provides for additional copies of a spectrum of a 2 Mbaud training signal for better accuracy in decoding transmitted data by a receiver. In one embodiment, the extended bandwidth is a 12 MHz band centered at 10 MHz, from 4 MHz to 16 MHz. This extended bandwidth allows for three copies of a 4 Mbaud training sequence or six copies of a 2 Mbaud training sequence. The extended bandwidth of the invention is compatible with a HomePNA 2.0 system by providing a training sequence that enables a HomePNA 2.0 receiver in 2 Mbaud mode to train on the transmitted signal and determine that the transmitted signal is not intended for the HomePNA 2.0 receiver in 2 Mbaud mode.
54 Citations
19 Claims
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1. An extended bandwidth HomePhoneline Network Alliance system, comprising:
a transmitter configured to transmit an extended bandwidth signal, the extended bandwidth signal having a bandwidth greater than a bandwidth of a signal that conforms to the bandwidth limitations of a HomePhoneline Networking Alliance 2.0 specification, wherein the bandwidth of the extended bandwidth signal includes more than one and one half copies of a spectrum of a 4 Million symbols per second (Mbaud) signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An extended bandwidth HomePNA system, comprising:
means for generating an extended bandwidth signal, the extended bandwidth signal having a bandwidth greater than a bandwidth of a signal the conforms to a HomePhoneline Networking Alliance 2.0 specification, wherein the bandwidth of the extended bandwidth signal includes more than one and one half copies of a spectrum of a 4 Million symbols per second (Mbaud) signal.
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14. A method for generating a training sequence for training a receiver, comprising the steps of:
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upsampling a 2 Mbaud signal to an 8 Mbaud signal; modulating the 8 Mbaud signal with a 1 MHz signal; filtering the modulated 8 Mbaud signal to produce a filtered signal having a 12 MHz wide baseband spectrum; and modulating the filtered signal with a 10 MHz carrier signal to produce the training sequence. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification