9 search results - page 1 / 2 » A Novel OFDMA Ranging Method Exploiting Multiuser Diversity |
GLOBECOM
2007
IEEE
13 years 10 months ago
2007
IEEE
This paper addresses initial ranging (uplink synchronization and power control) for TDD OFDMA systems. Exploiting the channel knowledge from the downlink channel together with ini...
VTC
2008
IEEE
13 years 10 months ago
2008
IEEE
—OFDM is an attractive solution for the design of future wireless communications due to its robustness to dispersion in multipath environments. Additional diversity gains can be ...
VTC
2007
IEEE
13 years 10 months ago
2007
IEEE
—This paper presents a downlink performance analysis of a Layered Random Beamforming (LRB) - MIMO-OFDMA Physical Layer (PHY) as applicable to future generation wireless communica...
VTC
2010
IEEE
13 years 2 months ago
2010
IEEE
—This paper exploits the use of location information of wireless terminals to improve the performance of a beamforming system and support multiple access. Based on a system provi...
GLOBECOM
2006
IEEE
13 years 10 months ago
2006
IEEE
Abstract— In this paper, we propose a distributed opportunistic access scheme for uplink OFDMA systems. The sub-carriers are grouped into several sub-channels. Users access these...