Raja, who was the minister in the Congress-led UPA government when 122 telecom spectrum licences were issued to 8 companies in 2008 on first-come-first-serve basis, said his actions were for the benefit of masses.
Bringing competition in the telecom sector had sent mobile call charges to rock-bottom levels.
"My firm belief in the rightfulness of my actions as well as my faith in our nation's justice system has been validated today," he said in a statement.
Raja said he had, in fact, brought a "revolution" in the telecom sector.
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"I have felt somewhat vindicated all along even prior to this judgement because the beneficial results of my actions are evident to and being enjoyed by the nation's public (especially the poor)," he said.
Raja, DMK MP Kanimozhi and all other accused were today acquitted in the politically-sensitive 2G spectrum allocation scam cases by a special court which held that the prosecution "miserably failed" to prove the charges.
The Comptroller and Auditor General (CAG) had put the loss to the exchequer at Rs 1.76 lakh crore.
"I brought a revolution in the telecom sector. It is not unknown to the history that a person who did a revolution is often termed as a criminal," he said.
"Vested interests manipulated public perception by leveraging the media and sensationalising fabricated allegations," he said. "It has been repeatedly proven that the presumptive loss to the exchequer which formed the basis for the conspiracy theorists to run amok, was cooked-up."
Raja said he had full faith in the judiciary and had cooperated fully with the trial and did not seek even single day adjournment.
"I also had the courage and confidence to step into the witness box and gave evidence and offered myself for cross examination by the CBI, which is very unusual in criminal trials in India," he said.
He added: "The learned Judge has held that it is not just a case of the prosecution failing to prove its allegations, but a case where the prosecution case itself was false, which was my submission from the very first day."
He went on to thank his party leader and DMK cadre for their unflinching support during the "dark period" of his life which include 15 months in jail.
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