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 …

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 …

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

US10200227B2 - Pre-coding in multi-user MIMO - Google Patents US10200227B2 - Pre-coding
in multi-user MIMO - Google Patents Pre-coding in multi-user MIMO Download PDF Info …

In a coordinated multipoint system, geographically distributed base transceiver stations
employ overlapping coverage areas in a Radio Access Network (RAN) to serve multiple …

6, 188, 717 B1 6, 192, 068 B1 6, 208, 295 B1 6, 211, 671 B1 6, 215, 983 B1 6, 233, 248 B1
6, 236, 642 B1 6, 240, 129 B1 6, 243, 565 B1 6, 243, 581 B1 6, 252, 909 B1 6, 266, 702 B1 …

Instead of just consuming network resources, client devices create network resources via
cooperative subspace processing to increase data bandwidth and expand radio coverage …