Back to results
US 8,576,774 B2Granted
Method of generating low peak-to-average power ratio (PAPR) binary preamble sequences for OFDM systems
AssigneeKoninklijke Philips N.V.
InventorMonisha Ghosh
Life of this patent
Estimating the term…
Abstract
A wireless system and method including a medium access control (MAC) layer adapted to generate low peak-to-average power ratio binary preamble sequences for orthogonal frequency division multiplexing systems described.
Claims18
In a wireless communication network, a method of wireless communication, comprising:
- generating a short training sequence and a long training sequence in order to facilitate burst detection, synchronization and channel estimation at a receiver, wherein the short training sequence comprises a first non-zero symbol on an ith designated sub-carrier (i=integer) and the long training sequence comprises a second non-zero symbol on a jth designated sub-carrier (j=integer), the long training sequence being a generated pseudo-noise (PN) sequence generated according to a polynomial, the polynomial being x10+x9+x7+x5+x4+x2+1, resulting, in a time domain, in two repetitions of an N-sample vector (N=integer) in each of a plurality of orthogonal frequency division multiplexed (OFDM) symbols.
A wireless communication network, comprising:
- a wireless station having a sequence generator operative to generate a short training sequence and a long training sequence in order to facilitate burst detection, synchronization and channel estimation at a receiver, the short training sequence comprising a first non-zero symbol on an ith designated sub-carrier (i=integer) and the long training sequence comprises a second non-zero symbol on a jth designated sub-carrier (j=integer), the long training sequence being a generated pseudo-noise (PN) sequence generated according to a polynomial, the polynomial being x10+x9+x7+x5+x4+x2+1, resulting, in a time domain, in two repetitions of an N-sample vector (N=integer) in each of a plurality of orthogonal frequency division multiplexed (OFDM) symbols.
In a wireless communication network, a method of wireless communication, comprising:
- generating by a wireless station a short training sequence and a long training sequence, the short training sequence including a first non-zero symbol on an ith designated sub-carrier (i=integer) and the long training sequence including a second non-zero symbol on a jth designated sub-carrier (j=integer);
- the long training sequence being shifted by two shift values, S1 and S2, and being a generated pseudo-noise (PN) sequence generated according to a polynomial, the polynomial being x10+x9+x7+x5+x4+x2+1, resulting, in a time domain, in two repetitions of an N-sample vector (N=integer) in each of a plurality of orthogonal frequency division multiplexed (OFDM) symbols.
Dependencies are inferred from the claim text.