244 search results - page 11 / 49 » On the Tightness of the Buhrman-Cleve-Wigderson Simulation |
ICASSP
2011
IEEE
14 years 2 months ago
2011
IEEE
The problem of distributed multiuser medium access of a hierarchical cognitive radio network with multiple primary and secondary users is considered. Each primary user has a licen...
ICASSP
2011
IEEE
14 years 2 months ago
2011
IEEE
—This paper deals with optimized training sequences to estimate multiple-input multiple-output orthogonal frequencydivision multiplexing (MIMO-OFDM) channel states in the presenc...
106
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ICASSP
2011
IEEE
14 years 2 months ago
2011
IEEE
This paper presents a detailed sum rate investigation of Zero-Forcing (ZF) detectors over composite multiple-input multiple-output (MIMO) channels. To this end, we consider the ge...
126
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CORR
2011
Springer
14 years 2 months ago
2011
Springer
—We consider a multiple-input multiple-output (MIMO) multiple access channel (MAC), where the channel between each transmitter and the receiver is modeled by the doubly-scatterin...
APPROX
2007
Springer
15 years 3 months ago
2007
Springer
We prove a lower bound for swapping the order of Arthur and Merlin in two-round MerlinArthur games using black-box techniques. Namely, we show that any AM-game requires time (t2 )...