Multipath interference reduction on pilot estimation with legacy system interoperability
First Claim
1. A method for maintaining interoperation of one or more legacy mobile stations operable according to a first format while supporting one or more frequency domain equalization-capable mobile stations operable according to a second format, comprising:
- generating a first signal sequence according to a first format;
generating an offset vector; and
combining said first signal sequence with said offset vector to form a second signal sequence according to a second format, said second signal sequence of said second format supporting frequency domain equalization in one or more frequency domain-capable mobile stations, said second signal sequence maintaining compatibility with one or more legacy mobile stations.
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Accused Products
Abstract
System, base station and method for supporting frequency domain equalization for frequency domain equalization-capable mobile stations and supporting improved channel estimation for both time domain and frequency domain equalization-capable mobile stations on the forward link without the necessity of modifications to an air-interface specification of a legacy communication system. A first signal sequence is generated according to a first format and an offset vector is also generated. The first signal sequence and the offset vector are combined to form a second signal sequence according to a second format. The second signal sequence of said second format supports frequency domain equalization in one or more frequency domain-capable mobile stations. The second signal sequence maintains compatibility with one or more legacy mobile stations.
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Citations
23 Claims
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1. A method for maintaining interoperation of one or more legacy mobile stations operable according to a first format while supporting one or more frequency domain equalization-capable mobile stations operable according to a second format, comprising:
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generating a first signal sequence according to a first format; generating an offset vector; and combining said first signal sequence with said offset vector to form a second signal sequence according to a second format, said second signal sequence of said second format supporting frequency domain equalization in one or more frequency domain-capable mobile stations, said second signal sequence maintaining compatibility with one or more legacy mobile stations. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A base station, comprising:
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an encoder for encoding a plurality of message data bits into a plurality of code symbols; a signal modifier configured to generate a first signal sequence according to a first format and generate an offset vector; and a summer for combining said first signal sequence with said offset vector to form a second signal sequence according to a second format, said second signal sequence of said second format supporting frequency domain equalization in one or more frequency domain-capable mobile stations, said second signal sequence maintaining compatibility with one or more legacy mobile stations. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A wireless communication system comprising:
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a one or more non-frequency domain equalization-capable mobile stations configured to operate according to a first format; a second one or more frequency domain equalization-capable mobile stations configured to operate according to a second format; and a base station configured for maintaining interoperation of one or more non-frequency domain equalization-capable mobile stations operable according to a first format while supporting one or more frequency domain equalization-capable mobile stations operable according to a second format. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An apparatus for maintaining interoperation of one or more legacy mobile stations operable according to a first format while supporting one or more frequency domain-capable mobile stations operable according to a second format, comprising:
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means for generating a first signal sequence according to a first format; means for generating an offset vector; and means for combining said first signal sequence with said offset vector to form a second signal sequence according to a second format, said second signal sequence of said second format supporting frequency domain equalization in one or more frequency domain-capable mobile stations, said second signal sequence maintaining compatibility with one or more legacy mobile stations. - View Dependent Claims (20, 21, 22, 23)
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Specification