| Patent Number |
Title Of Patent |
Date Issued |
| 7567502 |
Methods and apparatus for adjusting bandwidth allocation in a wireless communications system |
July 28, 2009 |
| More efficient utilization of available bandwidth is implemented in an OFDM wireless communication system. The partitions of bandwidth may be of different sizes and may be different from the original system design parameters. Basic system structure such as the number of tones used and |
| 7554977 |
Method and apparatus for indicating packet boundaries in frames |
June 30, 2009 |
| Frames including a packet boundary information field indicator and, optionally, packet boundary information field in addition to packet data are described. Methods and apparatus for generating and using such frames are also described. The packet boundary indicator indicates the presence |
| 7463669 |
Method of tone allocation for tone hopping sequences |
December 9, 2008 |
| Methods and apparatus for allocating tones for communications purposes in adjoining cells of an OFDM system are described. Tones used in each cell are allocated to tone hopping sequences according to a tone to tone hopping sequence allocation function. Different cells use different tone |
| 7212564 |
Method of tone allocation for tone hopping sequences |
May 1, 2007 |
| Methods and apparatus for allocating tones for communications purposes in adjoining cells of an OFDM system are described. Tones used in each cell are allocated to tone hopping sequences according to a tone to tone hopping sequence allocation function. Different cells use different tone |
| 7061994 |
Methods and apparatus for I/Q imbalance compensation |
June 13, 2006 |
| Methods and apparatus for performing amplitude and phase imbalance correction operations on in-phase and quadrature phase signal components corresponding to a received signal are described. The imbalance correction operations relay on the use of relatively simple to implement feedbac |
| 7031292 |
Method of scheduling regular signal transmission in a cellular wireless system |
April 18, 2006 |
| Scheduling of regular signal transmissions, e.g., between a plurality of wireless terminals and a base station in a cellular network in a manner designed to reduce or minimize recurring periodic interference encountered by individual wireless terminals from transmission in neighborin |
| 6674794 |
System and method for sampling phase adjustment by an analog modem |
January 6, 2004 |
| A system and method for adjusting the phase of the analog signal produced by an analog modem connected to a digital modem over a telephone network. The digital portion of the telephone network is locked to the network clock, and the modems have no control over the sampling timing or rate |
| 6421388 |
Method and apparatus for determining PCM code translations |
July 16, 2002 |
| A method and apparatus for determining the correct decision regions in a PCM communication receiver utilizing a public Digital Telephone Network (DTN). A receiver receives samples from an analog loop of the DTN and quantizes the samples according to a reference lattice. The reference |
| 6373889 |
In-Band signal and detector for PCM modem exception processing |
April 16, 2002 |
| A signal for exception processing is provided. The signal includes a first sequence of PCM codewords. Each PCM codeword in the sequence has a magnitude corresponding to a maximum point within an active constellation. The signal further includes a timing mark following the first sequence. |
| 6266376 |
System and method for adjusting PCM data frames for robbed bit signaling in a telephone network |
July 24, 2001 |
| A system and method for shifting the relative phases of a PCM data frame and a network RBS frame by one or more symbols is disclosed. The method includes determining whether or not RBS is present. If RBS is present, the slots affected by RBS are identified. Next it is determined what dat |
