Method and apparatus to balance maximum information rate...

Details Method and apparatus to balance maximum information rate... Method and apparatus to balance maximum information rate...

2004-09-13

2009-10-06

Ahn, Sam K (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

Reexamination Certificate

active

07599443

ABSTRACT:
In a wireless MIMO communication system, for N symbols of a frame of information, allocating N1symbols to a stronger eigen sub-channel and N2symbols to a weaker eigen sub-channel, where N1>N2; determining a probability of reception error when transmitting the N2symbols through the weaker eigen sub-channel for an auxiliary signal-to-noise ratio; solving for a quality of service QoS of the weaker eigen sub-channel and if the QoS is less than a desired QoS, decreasing the value of N and repeating allocating symbols, determining the probability of reception error and solving for the QoS. Another aspect includes asymmetrically allocating spreading codes to a stronger eigen sub-channel and to a weaker eigen sub-channel such that the stronger eigen sub-channel is allocated more spreading codes than the weaker eigen sub-channel; and transmitting all systematic bits of turbo coded information over the stronger eigen sub-channel.

REFERENCES:
patent: 2004/0171359 (2004-09-01), Tirkkonen et al.
patent: 2005/0111376 (2005-05-01), Raghothaman et al.
patent: 2007/0116091 (2007-05-01), Kakura
patent: WO-2004/077778 (2004-09-01), None
“Generalized Linear Precoder and Decoder Design for MIMO Channels Using the Weighted MMSE Criterion”, Hemanth Sampath, IEEE Transactions on Communications, vol. 49, No. 12, Dec. 2001, pp. 2198-2206.

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