Uplink modulation and receiver structures for asymmetric...

Details Uplink modulation and receiver structures for asymmetric... Uplink modulation and receiver structures for asymmetric...

2006-03-14

2009-10-27

Pham, Chi H (Department: 2416)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C375S244000

Reexamination Certificate

active

07609614

ABSTRACT:
The present invention centers upon uplink communication protocols for use primarily with orthogonal frequency division multiple access (OFDMA) communication systems. Aspects of the invention relate to narrow band frequency division multiplexed (NBFDM) modulation protocols primarily for uplink usage in asymmetric OFDMA communication systems. In particular, NBFDM uplinks that use quadrature multiplexed continuous phase modulation are detailed and noncoherent detection schemes are developed to process the uplink channel signals without the need to transmit uplink phase reference signals. Other aspects of the invention relate to burst mode uplink communications in OFDMA systems such as those involving opportunistic beamforming.

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