Signal Detection Based on Parallel Group Detection Algorithm for High-Load Massive MIMO Systems

Algorithm 1

Proposed PGD algorithm.

Input: , , K,
Output:
(1)	Convert the system to equivalent extended form with ; .
(2)	Set and define .
(3)	Compute and .
(4)	Compute received vectors and channel matrices of the two parallel subsystems as , , , .
(5)	Estimate both transmitted subvectors , by applying a suitable subdetector to the kth subsystem having , .
(6)	Rearrange the recovered subvectors to get the overall estimated vector as .