Precoder Design for Physical Layer Multicasting
AssigneeNEC Laboratories America, Inc.
InventorsNarayan Prasad, Hao Zhu, Sampath Rangarajan
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Abstract
A method for a transmit precoder for multicast communication over a downlink in a wireless network, including: initializing a transmit precoder, a channel estimate for each user in the wireless network; updating for each user a receive filter and a slack matrix; updating the transmit precoder by solving a second order cone routine solvable in closed form; determining if a predetermined convergence is met; and outputting the updated transmit precoder responsive to the convergence criteria.
Claims5
A method for a transmit precoder for multicast communication over a downlink in a wireless network, comprising the steps of:
- initializing a transmit precoder, a channel estimate for each user in said wireless network;
- updating for each said user a receive filter and a slack matrix;
- updating said transmit precoder by solving a second order cone routine solvable in closed form;
- determining if a predetermined convergence is met;
- and
- outputting the transmit precoder responsive to said convergence criteria.
Dependencies are inferred from the claim text.