In a multi-user communication system, a pre-coder in a transmitter comprises a Discrete
Fourier Transform (DFT) spreader configured to spread reference-signal symbols with …

6,362,790 B1 3/2002 Proctor, Jr. et al. 7.587177 B1 9/2009 E.. 6,396.456 B1 5/2002 Chiang
et al. 7.592969 B2 92009 Proctor, Jr. etal 6,400,317 B2 6/2002 Rouphael et al. 7.593726 B2 …

An OFDM transmitter spreads original data symbols with a complex-valued spreading matrix
derived from a discrete Fourier transform. Spread data symbols are mapped to OFDM …

US7430257B1 - Multicarrier sub-layer for direct sequence channel and multiple-access coding
- Google Patents US7430257B1 - Multicarrier sub-layer for direct sequence channel and …

US7593449B2 - Multicarrier sub-layer for direct sequence channel and multiple-access coding
- Google Patents US7593449B2 - Multicarrier sub-layer for direct sequence channel and …

US7965761B2 - Multicarrier sub-layer for direct sequence channel and multiple-access
coding - Google Patents US7965761B2 - Multicarrier sub-layer for direct sequence channel …

(57) ABSTRACT A intelligent backhaul radio is disclosed, which can operate by Zero
division duplexing for use in PTP or PMP topologies, providing for significant spectrum …

A software defined radio (SDR) virtualizes physical-layer processing operations of a radio
access network (RAN) communication standard. The SDR comprises multiple components …

In a single-carrier frequency division multiple access (SC FDMA) system that utilizes
interleaved FDMA (IFDMA) or localized FDMA (LFDMA), a transmitter generates modula tion …

US PATENT DOCUMENTS 5,604,744 A 2, 1997 Andersson et al. 5,809,422 A 9/1998
Raleigh et al. 6.463, 303 B1 10/2002 Zhao 6,486,828 B1 1 1/2002 Cahn et al. 6,912, 195 B2 …